The release notes describe this fix in the Windows version (I am on Windows 7 x64):
- Fixed bug which could cause ‘Unknown language’ warnings when creating a Personal Book.
I tried recompiling the PB "Philosophical Fragments", which you can get here.
Under Logos 5.0b SR-4, I get 55 warnings, of which 50 I believe are the "Unknown language" warning.
However, I get the same number of warnings under 5.1 RC-1, with what appears to be the same number of "Unknown language" warnings.
I am posting this in case the reported bug fix was not actually fixed, thanks.
