If you are receiving an error message akin to:
Scan2CADv8.exe – Application Error The instruction at “0x0058d512″ referenced memory at “0×00000000″. The memory could not be “read”
…it is probable that your issue can be resolved with one of the two following processes.
First: please see: Setting Access Privileges For The Scan2CAD Directory
If this does not resolve your issue, please see: How To Perform A Fresh Scan2CAD Install