It would seem I've broken my DWF viewer. Exported a full sheet set (about 60 sheets) from Revit to DWF, opened up in ADR 2013 to collate the set for print-out and found I couldn't save the set. After repeated attempts crashed ADR and the error continued, I found one of my sheets wouldn't display at all.
Attached is a group of four sheets; the last page is the one that appears to be the problem. I am able to delete the sheet and save from the toolbar, but attempting to saveas fails and any attempt at re-ordering the sheets crashes the program.
Any help would be appreciated.