First of all, uncheck the boxes under:
Tools | Options | General | Name AutoCorrect
Then compact the database:
Tools | Database Utilities | Compact
Next, open the report in design view.
Choose Page Setup from the File menu.
On the middle tab, set the report to Default Printer.
Save.
Compact again.
There is a known bug related to Name AutoCorrect that fouls up the printer
for the report:
http://allenbrowne.com/bug-03.html
If that does not solve the problem, the database needs a decompile or more
major corruption rescue, so post back.