GuiMiner Broken?

I have been trying to get into Bitcoin mining and followed some of the tutorial here

https://www.youtube.com/watch?v=j7opj5-32hw

Bitcoin wallet and Guiminer opened and were working but i decided to let the wallet sync so i closed GUIminer and waited, fast forward one day and now GUIminer will not open, it's kinda invisible and wont do anything...

Any help! 

BTW-I have tried deleting GUIminer and re downloading several times still nothing!

C:\Users\%Username%\AppData\Roaming\poclbm\poclbm.ini

Just delete that file and it should start working again.

Thanks!