If you are using portable Desktop PC version (SMathStudioDesktopx.xxPortable.exe) and want to use recent *.lang files from SMath Translator:
1. Try to locate "lang" folder inside "Xenocode" folder tree. If you find one, just copy the appropriate *.lang file there.
2. If the "lang" folder does not exist, just make one here (v0.88):
"..\Xenocode\Sandbox\SMath Studio Desktop\1.1.14.0\2010.04.11T21.27\Virtual\MODIFIED\@APPDIR@\lang"
and put the desired *.lang files in this folder.
When you run the SMath portable version - the new *.lang files will be active and can be used from "Interface" dialog box.