[Fixed] 7-Zip: 4.65 Rev 2 doesn't want to change back to english

I was playing along changing my language(to test PidginPortable), and did run 7ZipPortable in Bulgarian once. After it never wanted to go back to English.

After going through the source and having a look in 'App\7-Zip\Lang' I come to the conclusion that it's a bug.

I do not know the exact reason why all the language files are *.txt file except for English (en.ttt), but this is equal in the original download from the 7Zip home page !
So there are 2 options to fix this, either,
Modify line 218 of the launcher script to:

IfFileExists "$PROGRAMDIRECTORY\Lang\$APPLANGUAGE.t*t" SetAppLanguage UpdatePaths

Or rename 'en.ttt' to 'en.txt'

Another thing is that language switching is not working on first run, cause it's writing an INI value to a non existing .reg file. This can be solved by including a basic .reg file in DefaultData:

REGEDIT4

[HKEY_CURRENT_USER\Software\7-zip]
"Lang"=

I've tested all cases !