When I try to pack with lstools, it seems to work, but after a short while (before it ends) the compression stops and I get this error:
"Internal error while creating package: bad allocation".
What can be the reason?
The exact reason is that archives are currently built in-memory, so that the packager runs out of mem before building the .pak.
You said that in mods folder, but I have put the file there and the game looks the same.
What path did you specify for "Package root path" and "Source paths"?
Also, if you're trying to translate, you should be updating the language .xml file for your language in Localization\, instead of messing around in the .pak files, no?