comments dissappear

i tried installing the latest nightly from sep22, but as usual, i couldnt figure out how how most of the new stuff worked, and it screwed up stuff that used to work in the old version, so i decided to go back to the 1.2 mingus. problem is now that it wont show any of the old comments any of my posts had, just new ones that are made after the installation of the old version. the comments are still there, i can edit them when i login, but they just dont display. it doesnt show that the post has any comments on the main page, and when you goto the comments for that post they dont show there either. but if a new comment is posted, it works just fine.