Thanks I'll need to try that too! I assumed that after having installed the PE rom in the XL-7 and the XL-7 did not let me go out of the 'user' preset selection the rom was not recognised.
The wierd thing with this was that, when I added the PE rom to cha 7 (cha 5 and cha 6 holding the xl-7 and mp-7 rom) I could not go out of the user preset section, suggesting no roms were installed.