Actually, a bit more info. I was running regsvr32 straight from the “run” command line. If I run it from C:\windows\syswow64 I get a different error:
“The module c:\windows\system32\mscal.ocx failed to load. Make sure the binary is stored at the specified path or debug it to check for problems with the binary or dependent .DLL files.
The specified module could not be found.”