I have a small three part assembly. I can "create adrawingfrom assembly", but after several edits to an in contexteditsketch, when I try to switch to the drawing, I get the aboveerrormessage. I can close all other part files that are open, butIcan't close the drawing file. I can move the cursor around inthedrawing, but cannot access any icons or menus. I have to doa"cont. alt. del." and end Solidworks.  I am running2006 sp2.this problem just started yesterday.SolidworksDrawings And Detailing