I have some starnge problem with True Transparency, since 5 days when I downloaded it I got this error 6 times :

This error randomly shows up only when I open my documents (for example - I opened my doc 4 times w/o problems but next time I got error) I have TT in "my documents/vista/tt" if this matters.
I dont use the newest version because of CPU usage bug.
Any ideas how to fix it?