Not sure what is going on with this DWG. Using ACAD2006
There are a lot of hatches & may be the cause.
When I pan & zoom in model space the display of model space gets corrupted, turns black (background color) and if I cursor over an object it becomes visible.
But then ACAD locks up & I have to kill the acad process.
I tried deleting the hatches but no luck.
Any ideas? No other drawing so far are giving me trouble.
Thanks