My ACAD Mech 2013 just crashed when trying to export an iges file.Now when I open the program it won't allow me to look through folders to find my drawing... And the export to Iges or step files option is missing.How can I get that back?

i did a system restore and got back the folder view.  But still do not have the export to iges or export to step option... Any ideas?

nver mind  the system variable FILEDIA SET TO 1 (ON) RESTORES THAT OPTION.