As you may or may not know, the last version of visual pinmame (1.2), which marked the upgrade to the windows core, had several syncing and gameplay problems cause it to be unplayable on most systems. So much so that they also released vpinmame 1.12.1 (dos core) as a alternative.
Also as you may or may not know visual pinmame released a new version of the windows core today (1.21). Do NOT download this unless you are asking for trouble. It has even more problems then the first attempt. Every game I tried wouldn't even run with visual pinball. The biggest problem is, in preperation for an upgrade to the dos core version (will be 1.12.2) they have removed the link to 1.12.1, so you can't go back until they are finished with the new build.
I normally don't discourage people from trying experimential builds of emus, but this one is really that bad. Wait until the dos core version is upgraded, don't bother with the windows core yet.