Endnote search crashing

When I open endnote, the search function works beautifully for a few times, then inexplicably stops being able to import data. It still searches and finds papers fine, but when you hit ‘ok’ nothing loads. If i shut the program then reopen it works fine again for a few searches, then stops. I’ve loaded all updates, what else can i do? It’s getting rather annoying to have to keep reopening the program to keep it working.

(Endnote x2, on Vista with MS Office 2007)