Problems with X5 and Word Add-In "EndNote X5".

Hi all,

I have Word 2007 Win-7 Professional 64-bit, EndNote X5 (Network license for 40 users).

I am superuser and our IT-Service is only administrator.
Last year I worked with EndNote X2 and in the last time I have installed EndNote X5 (but at first uninstall EndNoteX2).

Whensoever I use the Word 2007 Add-In “EndNote X5 - Go to EndNote or Export to EndNote”  it calls the error message “Invalid Class String”.

When the IT-Service work as administrator on this computer we have no problems. 

What can i do?

Thanks in Advance

PS.: EndNote and Word run normally.

You may want to look at this

 - Mathilda, the EndNote team