sticky notes...no sound at all

[ouroboros]

im sorry if this has been covered...i searched but didnt find anything.

i recently purchased a used indigo. the previous owner hardly ever used and it still had an old os on it (4.5 i think). i played with it for a few days to get used to it, then decided to update the os.

imediately after the update (which appeared to go smoothly) i encountered this problem. sometimes when using the keys...they will make no sound at all...and sometimes they will make a sound...but the the the sound will play forever. i cant play another note untill i change the patch. i cant play more than 4 or 5 notes without one of these two things happening.

i have tried a hard reset...nothing happens...i have tried a reinstall of the os...nothing happens.

it seems obvios that something went wrong during the os update, but i cant seem to fix it.

thnx in advance for any help.