Hello
 
You should NOT install the two products in the same location.
Right now only solution is:
  1- Uninstall DSP tools 
  2- Uninstall M68K tools
  3- Delete original installation directory and its content from the disk.
  4- Re-install 68K software
  5- Re-install DSP software in a different directory
 
THere is no other way you can get it all working.
 
CrasyCat