Problem:

Unexplained problems with vbscripts and loading DMCOREX.DLL.  File does exist in system32 and is the right version. DMCOREX.DLL doesn't show up in Registry.

Solution:

Try and locate the DMCOREX.DLL in the registry. If its not there it is not registered properly.  Running regsvr32 DMCOREX.DLL fails.

 ActiveX component can't create object,, OBXDataSourceManager runtime error

This error can be traced to the lack of the C runtime files from Microsoft.  They are supplied with the core_services folder

C:OnBasecore_servicesutilitiesMS_71_Runtime

Move the files found in this directory to system32

atl7.dll

mfc71.dll

MFC71u.dll

MSVCP71.dll

MSVCR71.dll