Appcrash at exit when resource intensive operations happen

The gui works well, but after you try exit it crashes: `Fault Module Name:	StackHash_58aa`  
  
Consider putting this simple code to a button click event:  
```
for (int i = 0; i < 10000; i++)
{
	var a = new int[100];
}
```  

Maybe the numbers vary, depending on your machine. 