I'm using ADT 2007. the default setting for holding down Shift+ Mouse Wheel Click on my computer and mouse is set to 3-D Orbit. I use this often... very Often... up until today it worked just fine. halfway through the day it worked just fine. NOW i get a message telling me that walk and fly can only be viewed in perspective??? it gives me the option to toggle to perspective view, either choice flashes a walk & fly tool palette, (i cant tell exactly what it is since it goes too fast) and it disappears faster than it appears. a few more quick tries and i get this... (FATAL ERROR: Unhandled Access Violation Reading 0x0021 Exception at 441baah).
determining factors???
1. i was working with multi-view block display settings/ as well as creating new MVB
2. 2 weeks ago i downloaded a Simpson strong tie drop down menu (this was the last "add on" in customizing ADT.
3. short power outage yesterday (but i have two power surge protectors, one w/ battery backup)
this is all drawings, including new ones.
works properly the first use in the new dwg than quit's
checking "do not show me this again" is ignored and pops up again the next time i use it.