Losing Module Function in 2.0.2.0

I have 2 modules installed in Opencart 2.0.2.0 - A redirect button and a get the product from Amazon. They both work fine,but if I leave or shut off my computer for a few hours when I start up again, my modules are not showing up on my product page. I can see modules in the modules and they are active. I have to use a back up from my Cpanel to get my extensions to show up again. I don't think it is my extensions causing the problem because it's 2 of them from 2 different sources. I have also tries a different computer - same results Has anyone else had this problem

I found out the problem. It was a corrupt VQmod