Torezu whoa, slow down a little. This mod launcher automatically updates with NO warning, then game silently corrupt saves (no auto-backup btw) and you say that this is OK?
I'm a software developer, and all i can say: this is the most shitlord coding ever.
UPD: there IS an auto-backup. This helps me: http://forums.technicpack.net/threads/missing-blocks-after-update.17612/#post-130682