Hi giosi,
That is normal that all new files like wt_data_intl.php (and other data files wt_*_inc.php)
cause problem in Template Manager Module, because these files are non-processed files.
Then, Php see "weird words" in that file, so (false) error happen!
This is the TMM v1.0... an update will soon solve this problem, with better handling
of "local" and "remote" files. For your language files update, try to update template
files, before doing language updates.
I'm at work for now (Its noon here), tonight I'll try to take time to double check my update
installations to be sure that all is ok!
Regards,
Jacques