citation export does not work

when I press “export citation” (choosing direct export to EndNote) in, e.g., EBSCOHost or ScienceDirect or JSTOR, an icon briefly appears on my screen stating: “Saving citation…”. Then it disappears. No connection is made to EndNote, even though the functionality used to work

I have WinXP, Firefox 3 (did not work in 2 either), EndNote X.0.2. build 2283

the question, I suppose, is:

– where does Firefox save those export.txt files?

– how can I restore the link so that Firefox wakes up EndNote for direct export?

Do you have any Firefox plug-ins installed? Zotero, in particular, will hi-jack RIS Direct Export files before EndNote can import them. 

Jason Rollins, the EndNote team