I tried making my robot move forward for 90 seconds on 100 percent power. It did nothing. I don't know if i need to change the motor names or what. But when i compiled and downloaded my program it just stood there. It looked like it was about to move but it didn't. The start program button remained in the running state for the entire 90 seconds. Is there something wrong with my programming or is it the virtual worlds?

Please post your code and we can give you feedback. Without code it is hard to tell.

It's likely you used the wrong motor names in your code. If you are trying to move Tetrix motors with Lego motor names or vice versa it would behave as you described.