I have read elsewhere that the sfc/scannow issue is related to there being more than one version of opencl.dll. The version on the SB is fine, but sfc expects to see a different version, so it throws an error. The sources I read said that it is not a concern.
You are right about opencl.dll - but the DSIM rebuild process solved a whole bunch of other problems for me. Together with the two most recent updates, I now have a perfectly functioning SB.