problems with midi editor and tempo

[moosebox]

Hi this has happended to me twice now...: I record some stuff after a click, then add drums using xpand! and construct the beats manually in midi editor. then when I close the editor, suddenly the grid is either gone, or Is in another tempo/meter. and the click track is off as well, although the correct tempo/meter is still showing. the click even changes tempo during playback after this last time. VERY frustrating, as it destroys the entire session and, It doesnt matter if I load a backup file from before i added drums. the error still resist, even after restarting pro tools. This has only happened when I`ve used "odd" time signatures.

what to do?

btw. pro tools 8le windows xp

[moosebox]

now I`ve reopened the last track this happened with, wich I had fixed by doing everything all over again. but now it was all messed up again. Then i tried something new.. I tried lowering the buffersize:) It worked I thought the buffersize was supposed to be high when you try to playback something that was already recorded.. but hey.. problem fixed