I don't think there is a compatability table btw. Desktop Mgr and BB Device OS versions.

However it is always a good idea to use the latest versions of both.....

be careful though, i upgraded my Device OS to 4.5 from 4.2, without any problems. Then i made a mistake by adding the Chinese.alx worked fine on top of my old 4.2 OS to the BB, guess what?

App. Error 523


It took me a couple of long hours to solve it...........