So the newest version of dolphin keeps crashing on me.

[Xtreme2damax]

Others are reporting crashing after the same amount of time. If you are using a recent dev build Sonic Colors was kind of broke by the PPC_FC merge. If you see a white square on the title screen and some graphics seem broken it is a recent dev build post PPC_FC and might also cause that game to crash. If that's not the case check temps, install or reinstall the latest drive for your os and video card and check your Dolphin settings for anything that might cause crashing.