I was having that same problem so I uninstalled (reluctantly) and tried the Minecraft.exe download instead, but now I'm just getting this any time I try to install Minecraft.
EDIT: Sorry, I thought I could paste a screenshot. I get 2 windows, the Launcher window (that just does its thing then gets stuck when it finishes) and this error message: "Unable to start the Minecraft Runtime Environment. This is most likely caused by a corruption. Please try to reinstall Minecraft." Yeah, too bad that's what I'm trying to do.
Elizabeth Crain
I was having that same problem so I uninstalled (reluctantly) and tried the Minecraft.exe download instead, but now I'm just getting this any time I try to install Minecraft.
EDIT: Sorry, I thought I could paste a screenshot. I get 2 windows, the Launcher window (that just does its thing then gets stuck when it finishes) and this error message: "Unable to start the Minecraft Runtime Environment. This is most likely caused by a corruption. Please try to reinstall Minecraft." Yeah, too bad that's what I'm trying to do.