When restoring a database on SC 1.9.1 on a 64 bit machine, it has known to fail. Please download this fix and follow the instructions on how to extract it correctly.
Please extract the updated SC 2.02 Maintenance tool(Maintenance.exe) from the attached zip folder and place it under “..\UTC Fire & Security\Security Commander\DbScripts”.
Note: Make sure that there is no open DB connections (OR) SC services running while performing Restore Database.