I followed the instructions multiple times on the draftsight ddkernel certificate hotfix.  No matter what I do I get a message about  "Bad Image"  DDKERNEL.dll is not a valid windows image.

What can I do to restore this.  I have loaded the newer versions onto another machine, but until I'm fully comfortable using that one, I have jobs to complete, and I'd like to keep the old version up and running for quick changes.

Thanks