(iframedialog) integration - path problem

We are hosting our projects in folders of the www-root and are accessing them via the path (http://ourserver/project1, http:///ourserver/project2 ...).

The iframedialog plugin isn't working because node embed looks for it at the wrong path. the message in status report:

Node embed requires the CKEditor IFrame Dialog Field plugin. Please download it from http://ckeditor.com/addon/iframedialog and extract it into /var/www/project1/project1/sites/oursite.com/libraries/ckeditor/plugins/iframedialog.

The double project path is the problem. Is there a quick solution to fix it?