[Error] Start-up Problem

[ChopperSniper]

I made the game into a window the other day to do things while playing RO, didn't work out so well, and today, I tried booting it up, it makes a window, but it's clear, so I can see what it would be blocking, and it won't really boot up. I couldn't find anyone who was having the same problem on here, so I can't use any other topics for help. Can anyone help me fix this problem?