Hi Charlar and thank you.
pc #1 - a month old - add on g-force 430 w/2gb ram, latest drivers, updated about 3 days ago.
pc #2 - this is the pc i replaced with the new one, i still play with it. It has an add on g-force 9600 w/1gb ram
Last night i was really frustrated about this and i made a last ditch effort to figure it out. First i disabled antivrus to see if that was killing it... no joy, then i disabled firewall and still no joy. I have a second user account on my #1 pc, i , logged out and switched to the other user account. Mesh viewer works fine on that account. I logged in to SL and played around a bit, visting the mesh sandboxes just to get a look at whats being done. I then logged out and switched back to the main account on my pc, and tried SL mesh viewer again. Same problem, I double click the icon, i watch on task manager, it starts up and dies about 10 seconds later. I have no idea what is different. every other version of SL viewer works fine for me, although i usually use Phoenix viewer for the build tools. Hope this helps, thank you