OK, so here we go. I set up a Sega CD emulator to use 7-zip and set the filter to *.iso. Then I launched a game through it. GameEx extracts it and I pick up your 7z setting from your GameEx.ini and act accordingly. So far, so good. I opened the runitgame.bat, and the dtloader.log and assured the commands are looking good. Still good! The GameEx command has the switch removed, the image mounted, all is well. After a little research I discovered that GameEx now uses the Windows temp folder to extract the files to (which is awesome by the way), so I am sending the Virtual Drive Loader there when 7-zip is turned on. I'm still loading an ISO direct from the emulator, I only confirm that this does indeed mount from the right place now and DTLite is working. Try it and it should also work for you... And let me know how you get on.