Whoah dude thats crazy. But i wouldnt say it was Blockland, it was more likely the Engine blockland runs on, Torque.
You spelled 'Editor' wrong on your desktop. Anyways, thats weird, never had it happen.
Are you sure the problem didn't Break your BL because it was open at the time?
I do believe that the handicapped textures have something to do with artifacts, which is a sign that your video card may be failinghttp://en.wikipedia.org/wiki/Digital_artifact might give you a better idea if I was off or didn't explain it too wellbut try an updated driver, and/or make sure you have the proper ones
My Computer Fails, I don't get the Blue screen of Death I get a Restart. I like my computer for some things but its Glitchy as hell and I'm saving to buy the next Gen in PC's Duel Core whahaha... old news... I am -$5 for saving up!