Tables in Word suddenly gets a blue-highlight

[noocyte]

We've got a rather large document, 200++ pages, with lots of pictures and tables (it's a user manual). The author got a "out of memory thingy" the other day and after that all tables (be that new or existing) now have a blue highlight. We're not sure if the memory crash and the problem is related, but it would seam so.

Does anybody have any idea what happened or how we can fix this?

Facts;

OS: Windows XP Pro SP2, with all patches

Office: Word 2003, with all patches