I use old versions of v4/m4 and i had the same problem . I rebought the V4 but ended up ripping the files from old runtimes I had put on disk and managed to get m4 working that way. its only a flook i had decide to save the full runtime on disks from poser 7 years ago. its a pain to do it that way but i nopw have both working in poser 11. this might not help but i thought i would share anyway incase you have saved old runtimes somewhere.