Emu XL-7 & MP-7 User's Group

Try this. Make a new preset, use the arpeggiator, but not a pattern 
arp. Set the extension count to something more than 1, then extension 
interval to 12. Save the preset, select another preset and then 
select the preset you just saved (now it's gone from the edit 
buffer). Then play some notes on the keyboard. Now the arpeggiator 
acts like the Extension interval is set to 1 instead of 12. Go into 
preset edit mode again, and check the extension interval. It still 
says 12, but it acts like it's 1. Change it to 11 and back to 12. Now 
it works correctly. Not good.