endnote plugin installer hangs saying "scanning for installed applications"

Dear all,

I have tried multiple times today to install the endnote plugins for web endnote aplication.

It has stopped responding at the step scanning for installed applications.

I have windows 7 32 bit, Office 2007. I have closed all open programs except Microsoft Frontendpoint protection which I cannot close.

Can anybody help me, or should I switch back to reference manager which I have used for several years quite successfully?

Best regards