Can't start from Steam

I think maybe I saw something about this earlier but it just started happening to me. When I run Pox out of my steam client I get the error message

Code:

Error: Could not create the Java Virtual Machine. 
Error: A fatal exception has occurred. Program will exit.

 

Same.^^^^^^

 

Working now though.

 

I have the same error, could you say if you did anything specific @Auronzwei ?

Edit: I managed to make it work by following this guide.