perfectdisk 8 erases all my vista thumbnail pictures

Hi, i have vista ultimate and im having a big problem after having done a defrag with the latest version of perfectdisk 8...I just finished customizing all my music folders with thumbnail pictures and then i decided to do a defrag with perfectdisk 8 and after the defrag all my folder thumbnail pics had been cleared or erased ! It deleted my thumbnail cache that saves all the pics..How can i make perfectdisk 8 not erase or rearrange my thumbnail folder pictures ?

 

Any suggestions ?

 

Have you contacted Raxco support ? Gotta say its something ive never heard of, especially as Perfect disk uses the Windows defrag API.

 

I always do it on smartdefragment setting..Maybe i should just pick defragment files only and see if that works or if not i'l just stick with the vista defrag and use perfectdisk only for online defragmentation..