If the full program is too big, then post the smallest real example that demonstrates the problem.
Otherwise the forum is not debugging what you are running and, as Erik said, you will get "insufficient" answers!

If cutting out the rest of your program solves the problem, then you have helped yourself to narrow-down the source of the problem! You can then start adding-in your other functionality in a logical manner, testing as you go, until the problem re-appears - then you will have a very good idea of where the problem lies, and a much better chance of fixing it!

This is a standard technique.

PS

Please do a search for "how to post code" for instructions on how to get your code to retain its layout/formatting.