I'm using WINXP with service pack 2....After installation. I'm getting "Runtime error 55" when i open the UST Pro 6.0 ,7.1 and 7.2 ....I try all the matter that have been post ... but still not success.....

I have no problem at WIN ME...except 7.2

Please help ......

Best Regard
BYPASS

I think there is problem with Ust working on SP2.
You should remove SP2 to use ust pro or use it on another computer not having installed SP2.