Our development server for InfiTech 2 modpack is unable to start up. When it starts, it crashes with: http://pastebin.com/3rGGTRjU
(If not GT issue, sorry I will move to another mod on the list - ExtraCells/AE2)
That looks much more like an Extra Cells issue.
Specifically, it looks like an Extra Cells Fluid Import Bus got stuck in a bad state after screwing something up either in a fluid import action or in an 'adjacent block changed' update. From that log, the server's not crashing while starting up, it's starting, trying to tick once, and instantly crashing out.