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MegaMek / megamek

MegaMek is a networked Java clone of BattleTech, a turn-based sci-fi boardgame for 2+ players. Fight using giant robots, tanks, and/or infantry on a hex-based map.
http://www.megamek.org
GNU General Public License v2.0
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Problems loading saved games #3509

Open TrailblazerDan opened 2 years ago

TrailblazerDan commented 2 years ago

MegaMek v 0.49.7, running Java 8 Update 321, Windows 10

When I try to load any saved game, I get the message "Error: Unable to load game file."

Log file and saved game attached.

saveswontload.txt SavesWontLoad.sav.gz

Windchild292 commented 2 years ago

We've updated to Java 11, which means you'll need to update to use the 0.49.x development branches. As Java is now open source, we recommend Adoptium Temurin 11. We have a help page for Windows and Mac. Further, for Linux, you should be able to use your package manager to install Adoptium Temurin from their repository. Finally, all our automated tests (with the exception of MegaMekLab) are done with Temurin 11.

From our release notes for this release.

TrailblazerDan commented 2 years ago

Whoa, I had no idea! That is not what comes up when I google "Java update"! Thanks very much.

TrailblazerDan commented 2 years ago

Sorry, fixing this hasn't fixed the problem... should I open a new ticket?

Windchild292 commented 2 years ago

Nope, reopening now. 1) Does that create anything in the /logs folder? If so, can you attach them? 2) Are you launching from downloads or program files? If so, please move the program to desktop and try there. 3) Please check your Java version, which can be done by using the guide on this site https://www.businessinsider.com/how-to-check-java-version-in-windows

TrailblazerDan commented 2 years ago

  1. Oops, attached, I was thinking the HTML file was the one.

  2. Was launching from the Documents library folder; moving it to Desktop didn't fix things.

  3. C:\Users\DJ>java -version openjdk version "11.0.14.1" 2022-02-08 OpenJDK Runtime Environment Temurin-11.0.14.1+1 (build 11.0.14.1+1) OpenJDK 64-Bit Server VM Temurin-11.0.14.1+1 (build 11.0.14.1+1, mixed mode SavesWontLoadLog.log )

Windchild292 commented 2 years ago

I'll also need legacy.log.

TrailblazerDan commented 2 years ago

Attached SavesWontLoad_legacy.log

Windchild292 commented 2 years ago

You're loading it using Java 17, which also breaks save games and is thus completely unsupported at this time.

You'll need to uninstall all Java installs, and then install Java 11.

TrailblazerDan commented 2 years ago

Damn, I don't know how 17 even got on the computer. My brother must have installed it without telling me. I'm very sorry for wasting your time with this.

On Tue, Mar 15, 2022 at 12:11 PM Justin Bowen @.***> wrote:

You're loading it using Java 17, which also breaks save games and is thus completely unsupported at this time.

You'll need to uninstall all Java installs, and then install Java 11.

— Reply to this email directly, view it on GitHub https://github.com/MegaMek/megamek/issues/3509#issuecomment-1068173218, or unsubscribe https://github.com/notifications/unsubscribe-auth/AEXUM2YI5VV2B7T3JDBYEPLVACZCFANCNFSM5QZCKXMA . Triage notifications on the go with GitHub Mobile for iOS https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675 or Android https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub.

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AQGadget commented 2 years ago

As an FYI to whoever finds this thread next, trying to save with Java 16 broke the saves at the entities section, so your saves may not be recoverable even once you fix the Java version.