Quote from commissar
it won't let me update to 1.3.2... i'm stuck on 1.3.1. won't even let me force update
Place the current ".minecraft" folder into a backup one then start MC by itself to start clean.
Allocate 0 memory in the "Setup" screen, too much memory is being allocated. Start a game and hit "F3" to see how much memory is being used, then exit and set a little above the max being used.Quote from spore4277
I've been getting a similar error to this, and I can't find a way to solve it.
Also make sure that the latest Java is installed by uninstalling the current one then install a newest downloaded copy. If you have 64bit OS make sure to download Java 64bit also, as the auto update on their website only detects browsers.