SET PATH ERROR in Windows 10 64bit

[Alok-Baba]

1. I have downloaded and unzip mujoco200 at \userpath.mojoco.

2. I have obtained license and mjkey.txt and copied it to \userpath.mujoco as well as \userpath.mujoco\mujoco200\bin\

3. I have added environment variable name PATH = C:\userpath.mujoco\mujoco200\bin;%PATH%

4. Alongside this, I have tried

   set MUJOCO_PY_MJKEY_PATH=C:\path\to.mujoco\mjkey.txt set MUJOCO_PY_MUJOCO_PATH=C:\path\to.mujoco\mujoco200\bin

5. And the rest of procedure of cloning this git, and installing openai

Yet I only able to run classic gym environments, whenever I try to run any robotics environment it shows " add mujoco to your library error".

The error shown is

I don't get it even I have added the PATH as new variable and also in command promt, why it is still showing this error.

Any help is highly appreciated.

[dorox1]

I don't have an answer, but I have the same issue. I installed MuJoCo, have the license key and everything, but get that exact error when I try to run a MuJoCo program:

Exception: Please add mujoco library to your PATH: set PATH=C:\Users\USERNAME.mujoco\mujoco200\bin;%PATH%

I have tried several different batch configurations, and have put the MuJoCo mjkey.txt file in several different directories. My user environment variables are as follows:

MUJOCO_PY_MJKEY_PATH = C:\path\to.mujoco\mujoco200\bin\mjkey.txt MUJOCO_PY_MUJOCO_PATH = C:\path\to.mujoco\mujoco200\bin Path = C:\Users\USERNAME.mujoco\mujoco200\bin;%PATH%

I have also tried:

MUJOCO_PY_MJKEY_PATH = C:\path\to.mujoco\mjkey.txt MUJOCO_PY_MUJOCO_PATH = C:\path\to.mujoco\mujoco200\bin Path = C:\path\to.mujoco\mujoco200\bin;%PATH% - (or the previous USERNAME one)

Just adding this to the list of things that have been tried.

[thavlik]

The python wheel currently expects you to have mjpro150 and not mujuco200. Your paths are otherwise set correctly. Check the download page at https://www.roboti.us/index.html

[chuoru]

I have successfully install mujoco-py on Windows 10. In my opinion, your problem might be:

1) Window-supported mujoco-py version stopped at 1.50.1.68 as it was written in README. So we should use that version. And if using this version, we need to download mjpro150 from https://www.roboti.us/index.html.

2) About the SET PATH errors, I just copied and pasted the recommended from the error which was set PATH=C:\Users\tranthanh.mujoco\mjpro150\bin;%PATH% , into the terminal.

[KomanechiL]

Hello, I followed serveral tutorials to install Mujoco on WIndows 10:

• https://medium.com/@sayanmndl21/install-openai-gym-with-box2d-and-mujoco-in-windows-10-e25ee9b5c1d5
• https://github.com/openai/mujoco-py/issues/253

But none of these worked for me.

Here are my steps that i made

1. I downloaded Microsoft Visual C++ build tools 2019

2. I downloaded mjpro150 win64 from https://www.roboti.us/index.html

3. created %userprofile%\.mujoco\ and put mjpro150 into the folder. So my folder structure looks as following:

   • .mujoco
   • mjkey.txt
     • mjpro150
       • bin
         • mjkey.txt
         • ...
       • doc
       • include
       • model
       • sample

4. I created my virtual enviroment in my projectfolder. > virtualenv env

5. I cloned the repository and

   $git clone https://github.com/openai/mujoco-py.git
   $git checkout tag/1.50.1.0

6. I activated my virtual enviroment and installed gym

   > & env/Scripts/activate
   > pip install gym
   > SET PATH=%userprofile%\.mujoco\mjpro150\bin;$Env:PATH;

   > echo $Env:PATH contained the path %userprofile%\.mujoco\mjpro150\bin

7. Preparations to install mujoco

   cd mujoco-py
   python -m pip install --upgrade setuptools #upgrade setuptools
   pip install -r requirements.txt #install requirements
   pip install -r requirements.dev.txt #install dev requirements

8. I replaced all the instances of isinstance(addr, (int, np.int32, np.int64)) with hasattr(addr, '__int__') in these files

   \path\to\mujoco-py\scripts\gen_wrappers.py
   and
   \path\to\mujoco-py\mujoco_py\generated\wrappers.pxi

9. Now I tried to recompile it > python -c "import mujoco_py" #force compile mujoco_py

And then this Error occured :
ImportError: DLL load failed while importing cymj: Note the error occured even if I did not made the changes in Step 8.

10. I ignored this error and continued with >python setup.py install and it displayed no Error

11. However I executed the following code

    
    import gym # openAi gym
    from gym import envs

env = gym.make('FetchReach-v1') env.reset() for _ in range(1000): env.render() env.step(env.action_space.sample()) # take a random action env.close()

and got:
**`CompileError: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\BuildTools\\VC\\Tools\\MSVC\\14.25.28610\\bin\\HostX86\\x64\\cl.exe' failed with exit status 2`**

Can someone tell which steps I have done wrong?

[paulskv]

After you set the path, if you still have the problem, restart your computer. That fixed it for me. Restart it, don't shut down and open again.

[AOD555]

I have successfully install mujoco-py on Windows 10. In my opinion, your problem might be:

1. Window-supported mujoco-py version stopped at 1.50.1.68 as it was written in README. So we should use that version. And if using this version, we need to download mjpro150 from https://www.roboti.us/index.html.
2. About the SET PATH errors, I just copied and pasted the recommended from the error which was set PATH=C:\Users\tranthanh.mujoco\mjpro150\bin;%PATH% , into the terminal.

Literally open up the terminal and paste the set path, and then it should work

[xuxiaoxia8385]

After you set the path, if you still have the problem, restart your computer. That fixed it for me. Restart it, don't shut down and open again.

This also works for me! Thanks very much!

[KindleKin]

Hello, I followed serveral tutorials to install Mujoco on WIndows 10:

• https://medium.com/@sayanmndl21/install-openai-gym-with-box2d-and-mujoco-in-windows-10-e25ee9b5c1d5
• What is the step by step process to install mujoco-py in Windows 10 without installing Anaconda? #253

But none of these worked for me.

Here are my steps that i made

1. I downloaded Microsoft Visual C++ build tools 2019
2. I downloaded mjpro150 win64 from https://www.roboti.us/index.html
3. created %userprofile%\.mujoco\ and put mjpro150 into the folder. So my folder structure looks as following:

• .mujoco

  • mjkey.txt

  • mjpro150

  • bin

    • mjkey.txt
    • ...

  • doc

  • include

  • model

  • sample

1. I created my virtual enviroment in my projectfolder. > virtualenv env
2. I cloned the repository and

$git clone https://github.com/openai/mujoco-py.git
$git checkout tag/1.50.1.0

1. I activated my virtual enviroment and installed gym

> & env/Scripts/activate
> pip install gym
> SET PATH=%userprofile%\.mujoco\mjpro150\bin;$Env:PATH;

> echo $Env:PATH contained the path %userprofile%\.mujoco\mjpro150\bin

1. Preparations to install mujoco

cd mujoco-py
python -m pip install --upgrade setuptools #upgrade setuptools
pip install -r requirements.txt #install requirements
pip install -r requirements.dev.txt #install dev requirements

1. I replaced all the instances of isinstance(addr, (int, np.int32, np.int64)) with hasattr(addr, '__int__') in these files

\path\to\mujoco-py\scripts\gen_wrappers.py
and
\path\to\mujoco-py\mujoco_py\generated\wrappers.pxi

1. Now I tried to recompile it > python -c "import mujoco_py" #force compile mujoco_py

And then this Error occured : ImportError: DLL load failed while importing cymj: Note the error occured even if I did not made the changes in Step 8.

1. I ignored this error and continued with >python setup.py install and it displayed no Error
2. However I executed the following code

import gym # openAi gym
from gym import envs

env = gym.make('FetchReach-v1')
env.reset()
for _ in range(1000):
    env.render()
    env.step(env.action_space.sample()) # take a random action
env.close()

and got: CompileError: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\BuildTools\\VC\\Tools\\MSVC\\14.25.28610\\bin\\HostX86\\x64\\cl.exe' failed with exit status 2

Can someone tell which steps I have done wrong?

Hi bro, have you sloved this problem?

I got same error as you...

[KomanechiL]

Hello, I followed serveral tutorials to install Mujoco on WIndows 10:

• https://medium.com/@sayanmndl21/install-openai-gym-with-box2d-and-mujoco-in-windows-10-e25ee9b5c1d5
• What is the step by step process to install mujoco-py in Windows 10 without installing Anaconda? #253

But none of these worked for me. Here are my steps that i made

1. I downloaded Microsoft Visual C++ build tools 2019
2. I downloaded mjpro150 win64 from https://www.roboti.us/index.html
3. created %userprofile%\.mujoco\ and put mjpro150 into the folder. So my folder structure looks as following:

• .mujoco

  • mjkey.txt

  • mjpro150

  • bin

    • mjkey.txt
    • ...

  • doc

  • include

  • model

  • sample

1. I created my virtual enviroment in my projectfolder. > virtualenv env
2. I cloned the repository and

$git clone https://github.com/openai/mujoco-py.git
$git checkout tag/1.50.1.0

1. I activated my virtual enviroment and installed gym

> & env/Scripts/activate
> pip install gym
> SET PATH=%userprofile%\.mujoco\mjpro150\bin;$Env:PATH;

> echo $Env:PATH contained the path %userprofile%\.mujoco\mjpro150\bin

1. Preparations to install mujoco

cd mujoco-py
python -m pip install --upgrade setuptools #upgrade setuptools
pip install -r requirements.txt #install requirements
pip install -r requirements.dev.txt #install dev requirements

1. I replaced all the instances of isinstance(addr, (int, np.int32, np.int64)) with hasattr(addr, '__int__') in these files

\path\to\mujoco-py\scripts\gen_wrappers.py
and
\path\to\mujoco-py\mujoco_py\generated\wrappers.pxi

1. Now I tried to recompile it > python -c "import mujoco_py" #force compile mujoco_py

And then this Error occured : ImportError: DLL load failed while importing cymj: Note the error occured even if I did not made the changes in Step 8.

1. I ignored this error and continued with >python setup.py install and it displayed no Error
2. However I executed the following code

import gym # openAi gym
from gym import envs

env = gym.make('FetchReach-v1')
env.reset()
for _ in range(1000):
    env.render()
    env.step(env.action_space.sample()) # take a random action
env.close()

and got: CompileError: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\BuildTools\\VC\\Tools\\MSVC\\14.25.28610\\bin\\HostX86\\x64\\cl.exe' failed with exit status 2 Can someone tell which steps I have done wrong?

Hi bro, have you sloved this problem?

I got same error as you...

unfortunately not. I moved to pybullet for my project

[grumm9690]

Hello, I followed serveral tutorials to install Mujoco on WIndows 10:

• https://medium.com/@sayanmndl21/install-openai-gym-with-box2d-and-mujoco-in-windows-10-e25ee9b5c1d5
• What is the step by step process to install mujoco-py in Windows 10 without installing Anaconda? #253

But none of these worked for me. Here are my steps that i made

1. I downloaded Microsoft Visual C++ build tools 2019
2. I downloaded mjpro150 win64 from https://www.roboti.us/index.html
3. created %userprofile%\.mujoco\ and put mjpro150 into the folder. So my folder structure looks as following:

• .mujoco

  • mjkey.txt

  • mjpro150

  • bin

    • mjkey.txt
    • ...

  • doc

  • include

  • model

  • sample

1. I created my virtual enviroment in my projectfolder. > virtualenv env
2. I cloned the repository and

$git clone https://github.com/openai/mujoco-py.git
$git checkout tag/1.50.1.0

1. I activated my virtual enviroment and installed gym

> & env/Scripts/activate
> pip install gym
> SET PATH=%userprofile%\.mujoco\mjpro150\bin;$Env:PATH;

> echo $Env:PATH contained the path %userprofile%\.mujoco\mjpro150\bin

1. Preparations to install mujoco

cd mujoco-py
python -m pip install --upgrade setuptools #upgrade setuptools
pip install -r requirements.txt #install requirements
pip install -r requirements.dev.txt #install dev requirements

1. I replaced all the instances of isinstance(addr, (int, np.int32, np.int64)) with hasattr(addr, '__int__') in these files

\path\to\mujoco-py\scripts\gen_wrappers.py
and
\path\to\mujoco-py\mujoco_py\generated\wrappers.pxi

1. Now I tried to recompile it > python -c "import mujoco_py" #force compile mujoco_py

And then this Error occured : ImportError: DLL load failed while importing cymj: Note the error occured even if I did not made the changes in Step 8.

1. I ignored this error and continued with >python setup.py install and it displayed no Error
2. However I executed the following code

import gym # openAi gym
from gym import envs

env = gym.make('FetchReach-v1')
env.reset()
for _ in range(1000):
    env.render()
    env.step(env.action_space.sample()) # take a random action
env.close()

and got: CompileError: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\BuildTools\\VC\\Tools\\MSVC\\14.25.28610\\bin\\HostX86\\x64\\cl.exe' failed with exit status 2 Can someone tell which steps I have done wrong?

Hi bro, have you sloved this problem? I got same error as you...

unfortunately not. I moved to pybullet for my project

Have anyone solved this final error? I need mujoco for my openai-gym project

[JannisHal]

Hello, I followed serveral tutorials to install Mujoco on WIndows 10:

* https://medium.com/@sayanmndl21/install-openai-gym-with-box2d-and-mujoco-in-windows-10-e25ee9b5c1d5

* [What is the step by step process to install mujoco-py in Windows 10 without installing Anaconda? #253](https://github.com/openai/mujoco-py/issues/253)

But none of these worked for me.

Here are my steps that i made

1. I downloaded Microsoft Visual C++ build tools 2019

2. I downloaded `mjpro150 win64` from https://www.roboti.us/index.html

3. created `%userprofile%\.mujoco\` and put mjpro150 into the folder.
   So my folder structure looks as following:

* .mujoco

  * mjkey.txt
  * mjpro150

    * bin

      * mjkey.txt
      * ...
    * doc
    * include
    * model
    * sample

1. I created my virtual enviroment in my projectfolder.
   `> virtualenv env`

2. I cloned the repository and

$git clone https://github.com/openai/mujoco-py.git
$git checkout tag/1.50.1.0

1. I activated my virtual enviroment and installed gym

> & env/Scripts/activate
> pip install gym
> SET PATH=%userprofile%\.mujoco\mjpro150\bin;$Env:PATH;

> echo $Env:PATH contained the path %userprofile%\.mujoco\mjpro150\bin

1. Preparations to install mujoco

cd mujoco-py
python -m pip install --upgrade setuptools #upgrade setuptools
pip install -r requirements.txt #install requirements
pip install -r requirements.dev.txt #install dev requirements

1. I replaced all the instances of
   `isinstance(addr, (int, np.int32, np.int64))`
   with
   `hasattr(addr, '__int__')`
   in these files

\path\to\mujoco-py\scripts\gen_wrappers.py
and
\path\to\mujoco-py\mujoco_py\generated\wrappers.pxi

1. Now I tried to recompile it
   `> python -c "import mujoco_py" #force compile mujoco_py`

And then this Error occured : ImportError: DLL load failed while importing cymj: Note the error occured even if I did not made the changes in Step 8.

1. I ignored this error and continued with
   `>python setup.py install`
   and it displayed no Error

2. However I executed the following code

import gym # openAi gym
from gym import envs

env = gym.make('FetchReach-v1')
env.reset()
for _ in range(1000):
    env.render()
    env.step(env.action_space.sample()) # take a random action
env.close()

and got: CompileError: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\BuildTools\\VC\\Tools\\MSVC\\14.25.28610\\bin\\HostX86\\x64\\cl.exe' failed with exit status 2

Can someone tell which steps I have done wrong?

I have found a solution for the problem after step 9, the importerror: load dll. According to this post Python loads only DLLs from trusted folders since version 3.8. Therefore, one has to add the folder where mujoco is installed to the dll_list: os.add_dll_directory("....... //.mujoco//mjpro150//bin") When I add this line to my python file, I can use mujoco-py, but for some reason it has to be rebuild for every single execution. Nevertheliss, I hope this helps someone :)

[JannisHal]

I could fix the rebuild-error Import error. Trying to rebuild mujoco_py. running build_ext building 'mujoco_py.cymj' extension by simple adding the dll BEFORE importing gym