There is no default Kofax source stored in the registry yet. The Fujitsu-xxxC without SVRS was not reserved.
Reason 20393 - Unknown ISIS error
This error happens when Synergize Scan and Capture is ran without the proper scanner ISIS drivers installed.
Stop any running synergize applications and verify if the scanner is using the correct ISIS driver or if the ISIS drive is installed.
Install the scanner ISIS driver. Reboot if required