I broke Microsoft Word

I am currently writing a science-fiction novel, which has ballooned recently to 250 pages and 70,000 words (two-thirds done!). The other day when I was typing away on it a Microsoft Word error message popped up:

"There are too many spelling or grammatical errors in (document name) to continue displaying them. To check the spelling and grammar of this document, choose Spelling and Grammar from the Tools menu."

What this means is that I won't get anymore red squiggly lines under words unless I break up the novel into smaller documents. There are so many made-up words (alien names, planet names, etc.) that Word has stopped counting them--trust me, I'm not that horrible at spelling and grammar.

I have taken this error message as a compliment, since it shows I've written so much that even my computer can't keep up!