2001 is the last year for MM EFI. Check the cam cover for the wire for the cam sensor. Do you recall moving it, bumping it, or otherwise?? As well.....therre's a harness that runs under the right side of the frame, with a connector there. Make sure nothing got yanked there, too.
If you turned the bike off/on a few times without starting it, it can happen.
“When the going gets weird, the weird turn professional....” ~ Hunter S. Thompson~
R.I.P. Rubberdown. 1971-2012