If your buldozer doesn't want to “connect” with your project, then there might be conflicting setup in the Tools → Project Parameters… In there if your Satellite Grid: Current and the Texture Layers wont “match” (don't ask me hehe) buldozer don't want to connect to your project, meaning it doesn't show your terrain at all.

Try to reconfigure the satellite grid and texture layers values and it should fix the problem…

If that doesn't help and you have tried many times restarting V3 etc… then you just need to reboot your computer. Good luck :)