EndNote x2 error message "could not initialize database support"


I just installed EndNote X2 on my new laptop, running on Windows Vista. When I tried to open my existing EndNote libraries using EndNote X2, I always get the error message "“could not initialize database support”. The same error message also appear when I open the new library I just created using EndNote X2. However, I noticed that if I launch EndNote before opening up any library, then there is no problem. I don’t want to deal with the error message every time I open an library. Do you know how to solve the problem? Thanks!