Hi there,
I am running Windows 8 and Java 7 (problem occurs with 32bit Java and 64bit Java). Minecraft is installed in a Minecraft Profile Manager profile.
A clean 1.7.2 installation with Forge 10.12.0.1057 (mod folder empty) starts the launcher as normal (forge profile in the launcher selected). Minecraft proceeds to start, but the Minecraft window stays black. The ingame music starts playing after a few seconds. The same installation (1:1 copy) works fine on Win 7.
fml-client-latest.log
The log says that it loaded 3 mods. I have no Idea what they are supposed to be. This is a clean installation (promise!).
Thank you in advance for your help.