WINonCD 3.7 P.E. weill not read!

Can anyone help ? I have tried a couple of forums without success . The problem is , I downloaded 3.7 and I made sure that it was on my other HD as WINonCD 3.6 has been great so far and if 3.7 blew I could always go back to 3.6 . But while it SEEMS perfectly OK , when I select my stuff off an MP3 CD it wants to write IMMEDIATELY on the MP3 disc without reading . The image button gives up an error , and it ISNT set for “on the fly” Any ideas ? I would appreciate any help . Thanks !