Sometimes it has something to do with the preferences that u set in teh beginning when u first set it up. Kegetys Tutorial just messed mine up. There are a few things u have to remmeber
1. Buldozer must be on root drive (z:\, C:\, E:\)
2. ... well #1 is hte only thing i can remember right now
Try double clicking on where your island is in visitor then going into buldozer and viewing your island.