I have actually seen this before but only vaguely remember the cause - where the QdabraRules data connection is pointed to a SharePoint site rather than using the resource file in the form.
You can walk through the data connection wizard again for that file and redirect it to the QdabraRules.xml file in the resource files in your form. Or, if you'd like, attach the file to the Options tab here and I'll fix it up for you.