Ok. I used normal launcher. The effect is just the same.
The reason why I'm using custom launcher is that I'm used to it. It's simple and not so advertised as the official one.
But as I say, the problem is not the launcher. It's java, game or my OS.
The mods I try to run is for example Voxelmap or Minecraft Comes Alive. Both compatible with 1.7.2.
My Forge version is 10.12.0.1012.
I put mods in mod folder, as I always did and it worked when I played 1.6.4 half year ago.
