Summary
 
In AgilePoint Envision, when trying to create a process model based on an InfoPath XSN, an "Access Denied" message is shown.
Resolution
            AntiVirus software identifies
            that the Envision macro tries to run the extract.exe utility to unpack the XSN and
            blocks it. Disabling the AntiVirus will resolve the issue. Configure the AntiVirus to
            enable Envision macro access the extract.exe. 
More Information
 
 
AntiVirus Software: TREND MICRO OfficeScan 10.0 SP 1
Workaround: Try to create process model by using the XSF file rather than the XSN file.