I've been using forge for a long time and never had problems until 1.5 and 1.5.1. So I've already strolled through all of my mods, 1 by 1 checking through to see what's updated and what is not. All of my mods are 1.5.1 (double-checked the sites and redownloaded all just in case. Just *re-*downloaded the latest build of MCForge, and I tried some of the mods out with Mod Loader just to try it out. When I use ML, MC loads fine with the ML mods. However, if I use forge I get hung on the "Building Terrain screen". On a side note, my older worlds have "missing" or "mismatched" ID errors when I load using MCForge.
I'm not much of a coder or modder myself, so I can't really read the gobbledy-gook in the log lol. But from my main understanding I can see that something corrupted MCF somehow and it decided it doesn't want to work.
Other than that, I haven't a clue what's going on, any ideas?