I tried to install the SSP Industrialcraft mod via mod manager 2.0 for B1.3.

The program seemed to work okay, it was my first time using it though.

When I ran minecraft, it came up normally, proceeded to the loading screen but the green loading bar stopped about a centimeter from the end.

"Done loading" was displayed, but minecraft won't open. The problem occurs every time I try to open it.

Help?

delete every file you have for minecraft , then re download it, BUT SAVE YOUR WORLDS IF YOU WANT THEM. I forgot to do that, when I fixed mine today, It should work after that.

So just delete my appdata/roaming/.minecraft

folder?

You can also just delete your bin folder, and a mod folder if there is one.

That should fix it, if not then do what Gear said and delete your entire minecraft folder, and save your worlds first.

yea although i messed up and opened minecraft without my minecraft.jar file {was switching back to 1.3_1} and it did that just try redownloading your .jar file {delete your old one and re-open minecraft it should automatically download .jar}