Trouble with Midi / VST output

I have Cubase 7 and a UR22 previously I have having no problems hearing output from the UR22 / Monitors. However following a guide to “convert” .all files from years ago I installed and used SX3 to load up and then save as .cpr files. Unfortunately now for some reason I can’t fathom I can get any midi/vst sounds out of my PC other than when the Microsoft Wavetable is selected and that outputs from my basic pc speakers not the UR22. Also fyi audio tracks are outputting from the monitors just fine. Can anyone please help, I have little hair left.