Minecraft Version: 1.16.3

Forge Version: 34.1.15

Mod Version: 1.16.3-2.4.2-49

Simply the game does not load and gives the error in the title

crash-2020-10-09_17.36.09-fml.txt

Edit: No other mods were present.

Not seeing this behaviour at all. It loads fine for me with 1.16.3-2.4.2-49 and Forge 34.1.14, either with or without other mods present.

Also checked with Forge 34.1.15 just in case - still fine. No crashes.

Exception message: net.minecraft.util.ResourceLocationException: Non [a-z0-9/._-] character in path of location: pneumaticcraft:assembly_program_drıll

I'd say your installation is corrupt somehow. Something's gone and replaced the "i" in "drill" with a "ı" character - https://www.compart.com/en/unicode/U+0131. No idea what's done that or why, but it certainly wasn't me.

OK, think I know what's happening. What language are you running with? Turkish maybe? There's a translation issue when certain strings are lowercased within the mod, which should be an easy fix. Will get a new build out in the next day or so. In the meantime a workaround should be to run with an en_US locale.

Yes actually my computer language is Turkish.
I have experienced a crash like this before on a different mod. It capitalized "stair" wrong. Something similar I think.

This will be fixed in the next release (2.4.3) but you can use build 50 from https://jenkins.k-4u.nl/job/PneumaticCraft-Repressurized-1.16/ if you'd like to test the fix now... sorry build server problems right now, will hopefully have a build up later.

OK, build 54 from https://jenkins.k-4u.nl/job/PneumaticCraft-Repressurized-1.16/ should work.

Build 54 works, no crashes.

Fixed in 2.4.3 release