Hi, Godon.
I came around exactly the same problem and error message using VS.2013 and in my case the command line reference to the name of the ".ocx" component was not correct. So I have solved it by issuing such a command in the custom build step as: regsvr32 /s /c "$(OutDir)MyFil eName.ocx" and it Comes after that another error regarding insufficient rights to run the command ":VCEnd exited with code 5"...
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