Program That Compiles Well In VB, But Not So Well In .exe Form?

So I've just created a small program that reads from a file and has a few nested loops. I have a label that updates in the form every time the loop is run. When I compile this program in vb (2010), the program works properly, and the label updates as expected every time the loop is run. When I run the built .exe version, the program's backend works, but the label doesn't update, and the loading cursor appears over the form.(So the loop continues to run properly, but the label doesn't update on the form).