Ah, of course there is a problem using two latest versions of UpdateBuilder as both will use the same Global variable. I'll just use an old version of UpdateBuilder for non-unicode apps and the new version for 10.4 apps. It just means I'll get a 'Update to new version?' message every time I run the non-unicode version. Better than having to set the Global variable manually every time I run a different (unicode or non-unicode) FinalBuilder build