In my haste to get the last version released it would appear that I wasn't thorough enough with testing it to make sure everything was okay - That's Right!!!! (We've hit another bug). This one is a relatively simple one to fix and is a by-product of developing for the Linux envoironment on a Windoze machine.
The bug is simply one that it caused due to case sensitivity on some linux installations - the offending files are the language files - the ones supplied with the old package have 'capitalised' names - ie the first letter is a capital. The filenames stored in the database start with a lower case letter. Simply renaming the files will clear up the issue.
As usual the downloadable packages have been updated (a big sorry to all those who have already had a problem with them).