I had 1.1 with many mods installed.
I just updated to 1.2 and added many 1.2 mods while re-applying some 1.1 mods. I didn't do it one step at a time because there were too many mods, but also because I didn't know how the boards would behave in terms of data integrity if suddenly some of the functionality was missing.
Anyway, I managed to get everything working and found no errors while configuring and navigating (I had to adapt a couple of mods myself at installation, though)...or so I thought.
Just before re-opening the forums I tried to post, but I get an error saying my message "had no title" (error '77'). And it does have a title, before you ask
I'm taking a look at the code, but I'm not too familiarized with it. My current options are to perform a roll-back (fortunately I had a backup of everything) or wait until I fix this bug (such a pity having to do a roll-back when everything is just about to work, speed has substantially increased from 1.1...).
I don't know if it's a bug introduced by some particular mod or the 1.1->1.2 mod itself, it seems to basic.
Thanks
PD: I've performed an additional test: modifying an existint post. I get another error (seems to be '23') telling me "it can't open .txt".