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Issue description:

When I try to launch game, I get this crash.

Steps to reproduce:

1.Launch game
2.Creates a crash report.

Version (make sure you are on the latest version before reporting):

Forge: 1.10.2-12.18.3.2185
Mekanism: 1.10.2-9.2.4.103
Other relevant version:

If a (crash)log is relevant for this issue, link it here: (It's almost always relevant)

[https://pastebin.com/SNqZuzZH]

These JVM options have worked. I have been looking for this for 2 years. Thank you very much

Hi. I have the same problem and can't open a server. Can you explain how and where we use -Duser.country=US -Duser.language=en settings?

Thank you.

Will have to do some digging to find where it's happening, but somewhere there's a toLowerCase() which uses the system default locale, it should be giving locale.root as a parameter

Is there a way to fix this without editing mods ? Because im having same issue with some other mods too

You'd need to override the java locale.

Google leads to these JVM options (set in your launcher) might do the trick -Duser.country=US -Duser.language=en

With that set you can change the language in Minecraft back to Turkish if that's what you use (if it should decide to change itself)

These JVM options have worked. I have been looking for this for 2 years. Thank you very much

turkish locale?

yes

I know that problem is connected with my computer's language (Turkish) because I had same issue with textures in mekanism 1.7.10. Game could not find textures because they have written with "ı" instead of "i" and I have changed them to "i" myself and it worked but with this issue I dont know how to fix it myself. I have tried to change my system language to english from (control panel -> region and language) but it didnt work.