Oh right that is fairly weird Michael least you found away to get around it, hopefully the issue itself manages to get resolved.
I just got the same thing as you "Error: Could not find or load main class net.minecraft.client.main.Main
Java HotSpot(TM) 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release" But I am using Windows 8.1 I tried to do the normal thing of just deleting the full Minecraft folder and reinstalling the game but had nothing. (my game was working perfectly a few hours ago.)
Yea it seems to be ok for me too I loaded normally