Communication error (10114): No reply received from Back End

Hopefully get some help here for this.

I have installed the NEP on MOSS 2007 and can navigate to the

http://localhost/default.aspx

page.
I have added the EP Card Web Part. When I click Modify Shared Web Part, the browser takes some time, then returns the edit version of the page, with the right hand edit toolbar but the error “Communication error (10114): No reply received from Back End System (Time Out).”
I have checked other posts on this error and followed the resolutions, checking my web.config and message queues but i’m still getting the error.
Any help is much appreciated.