Hi Kahless:
I experienced that problem some time ago and what really happened was that the SCF file that DSC Engine was looking for didn't exist (actually, the path was incorrect). Another problem could be that the Citadel Database was not generated properly (SCF not saved)
So I would suggest to check the path of the file you are trying to load.
If you are running an executable with DSC RunTimeEngine, and you load the SCF file programatically, make sure the file you want is being loaded (show the path in an indicator before loading to check the path is correct)
If you are running an executable with DSC RunTimeEngine, but the SCF file is not loaded programatically, open the SCF file you want to load with DSCRunTime and SAVE.
If you are running a LabView VI, load your SCF file and SAVE.
I hope that with one of these three steps you will solve the problem
Hope it helps,
Aitortxo.