I had to install DirectOutput in "C:\Visual Pinball\tables\plugins\DirectOutput" instead of "C:\DirectOutput".. Also I had to search "regedit" for Directoutput and delete the file that says directoutputcomobject and I also deleted anything else that said directoutput. Then run as admin "RegisterDirectOutputComObject.exe" again. Make sure you change your global configs to new location. All worked fine after that. PinballX found DOF. This is file DOF files Im using.
http://mjrnet.org/pinscape/downloads/DirectOutput-mjr-20180830.zip