LO build extension manager thrown an error when I tried to update libreoffice-code-highlighter to version 2.2.1.

[PranavBhattarai]

Distro: Fedora 35 Workstation

Error message:

Error while installing extension Code Highlighter 2. The error message is: Cannot detect media-type: file:///tmp/STi7Zu/NVcmI1/b39f3a31-6a1e-41fc-bcdd-aee458de120f /builddir/build/BUILD/libreoffice-7.2.5.2/desktop/source/deployment/registry/dp_registry.cxx:481 The extension will not be installed.

Proof:

Info:

Version: 7.2.5.2.0+
Build ID: 20(Build:2)
CPU threads: 4; OS: Linux 5.16; UI render: default; VCL: gtk3
Locale: en-US (en_US.UTF-8); UI: en-US
Calc: threaded

For now, I'm installing this from outside LO. Please do fix this so that it doesn't break for future updates.

[jmzambon]

Hi Pranav,

Thanks for reporting. I can't see what causes this error, and I can't reproduce it by now. Sounds like some registry corruption. Have you tried to remove the extension, restart LibreOffice and reinstall it? I'll take some time as soon as possible to dig into that.

[PranavBhattarai]

Have you tried to remove the extension, restart LibreOffice and reinstall it?

I uninstalled the old extension and reinstalled the new version. Works fine. But the LO internal inbuilt "extension manager" (which fetches an update of all installed extensions), failed.

I think it should be reproducable. But can't confirm since I only use 1 distro. Have you tried updating the extension from the old one to the new one, using the "Check for updates" option in the LO extension manager?

[jmzambon]

The problem seems to lie in the extension registry, where an entry type has been change from 'string' to 'short'. Event if the value is unchanged (0 or 1), LibreOffice does not allow it and raises an error. The problem is not easy to solve, as bringing back the type to 'string' will give error for anyone who install Code Highlighter from v2.2.1 :( . I have to think a little bit on that...

[jmzambon]

Finally found a simple and (not) so obvious solution: remove the problematic property and add a new one with similar name...! Could you try to install that new version (v2.2.3)?

[PranavBhattarai]

Could you try to install that new version (v2.2.3)?

Well, I tried but failed to update from 2.2.2 to 2.2.3 as you can see in the gif uploaded below:

Error message goes like this, "Error while installing extension Code Highlighter 2. The error message is: Cannot detect media-type: file:///tmp/Rj4tqi/GL9sQn/3620c081-539e-4390-8052-ca9a423d1616 /builddir/build/BUILD/libreoffice-7.2.5.2/desktop/source/deployment/registry/dp_registry.cxx:481"

[jmzambon]

Hi,

What I tried, from within the Extension Manager:

• update from v2.0.1 -> v2.2.3 -> No errors
• update from v2.1 -> v2.2.3 -> No errors
• update from v2.2.1 -> v2.2.3 -> No errors
• update from v2.2.2 -> v2.2.3 -> No errors

I can't see what that "media-type" detection error is. Probably some kind of user profile corruption in _unopackages/cache/registry...

Last chance: deleting/renaming the uno_packages folder in the user profile and see if the error still raises.

LibreOffice 7.2.5.2, Linux Mint 20.3 Cinnamon 64-bit

[PranavBhattarai]

Probably some kind of user profile corruption in uno_packages/cache/registry...

I tried to search this folder by going inside /tmp directory, I can't see any directory named "Rj4tqi_", as you can see:

Can you tell me how can I delete this "uno_packages/cache/registry...", to see if the problem still persists while updating the extensions or not?

Shall I cross-post by linking this post in AskLibre community? They might know things in more detail.

[jmzambon]

In /home/\<user>/.config/libreoffice/4/user, rename the folder "uno_packages". A clean one will be restored on the next LibreOffice start. This is the folder where user's extensions are installed, so you will need to reinstall every extension you use. But you also will be rid of any corrupted registry file.

Do not hesitate to ask for help. I'ill be the first interested in any hint.

[PranavBhattarai]

ln command is used to create link of a file (aka, symlink). Is that a typing mistake!?

rename the folder "uno_packages".

I renamed "uno_packages" folder to "uno_packages_bak" using this command: mv uno_packages/ uno_packages_bak When I start LO, it didn't have any extension installed. By the way, I only use one extension which is this extension.

So I installed Code-highlighter 2.2.2 and restart LO and went to extension manager to upgrade to version 2.2.3. And yet again it thrown the error below:

Error while installing extension Code Highlighter 2. The error message is: Cannot detect media-type: file:///tmp/1mVLPM/8Z1LDg/3620c081-539e-4390-8052-ca9a423d1616 /builddir/build/BUILD/libreoffice-7.2.5.2/desktop/source/deployment/registry/dp_registry.cxx:481

[jmzambon]

I finally found the time to dive into that issue. After wasting a lot of time looking for a bug in the extension's code, I found out that the problem is accessing the oxt (located on Github relases page) from the extension manager. I installed a workaround, waiting to understand what exactly is going wrong.

[PranavBhattarai]

That's good to know. Let me know, the update on the hotfix release.

[jmzambon]

By chance there is no need to modify the extension, only a xml file located on the serveur.

If you go now to the extension manager, the autoupdate should work normally.

[PranavBhattarai]

Finally the extension updates pretty fine without any error message. Thank you. To verify, I uninstalled new version > Check for updates > Update & installed new version without getting error/crash.

[jmzambon]

Thanks again for your return and your help.