Wow.exe not loading from Mac

Hi all

I have an ongoing problem whereby when I click wow.exe and try to open the 3.3.5a WOTLK client from Mac nothing happens/loads. There is no message or anything, nothing simply happens. It has been working fine for almost a year and I have only very recently encountered a problem. A 2.4.3 BC client loads no problem when i click wow.exe on that file. Anyone encountered the same problem and/or know how to resolve? I use winebottler to convert the files to Mac.

Thanks a lot