I'm confused. When you say scripts are you referring to Nembot scripts or just tintin style scripting? Either way, I don't understand how upgrading from 16.7 to 16.12 would "totally fuck" your scripts. Listed below are the updates from .8 to .12. I don't see any major changes that would cause problems. As far as the extreme memory usage, Izzral is the only person I'm aware of that's had that problem.
Code:
v1.16.12
* (Update) Threading model changed to better handle waking from sleep.
v1.16.11
* (Fix) Reverted the display buffer back to using a non volatile image instead of vram based buffer. The performance loss of this change outweighs the fact Windows simply does not play well with other applications using vram. This may get reimplemented in the future as an optional setting for those using OS X or Linux.
v1.16.10
* (Fix) #INVERT repaint was not resetting background colour.
v1.16.9
* (Fix) Rate counter was not including gold picked up by a non visible group leader.
* (Fix) Page Up/Down can now be used for hot keys.
v1.16.8
* (Fix) #LOOP now works with reverse loops. Ex, #loop {100,1}
* (Fix) The hotkey gui would not reload new entries when the #HOTKEY command was used from scripts.