Separate names with a comma.
Oh yeah, another weird thing -- there were two dock plist files, the normal one and one called com.apple.dock.plist.zhf8YIg I don't know what...
Not an alternative route so much, the posted workaround of disabling the vm applications folder in the dock didn't stop the dock from using up...
hah, but trashing the dock plist and force quitting the dock after removing the windows application folder from the dock DID work for me!
The workaround did not work for me.