Because some other bills had to be paid aswell. Remember their Le-Mans adventure?
Just because you make a profit doesn't mean you will constantly have a large amount of cash ready at your disposal. In this case it's just bad timing. And if you follow some of the racing going on in the Netherlands you also know that the team is racing in the Dutch GT4 as Racing Team Holland with 2 cars, one of which is now seriously damaged by a flip during the races. Those things cost money too.