How do I make the "been" green squigglies happy?

In the following sentence:

I get green squigglies under “been.” I have restructured the sentence a few times, and I’m not sure what it wants, as the finger-wagger only says, “The word ‘been’ may not agree with the rest of the sentence.”

Is this a verb-tense problem? How does I made it happier?

thanks,
alex

Turn off the grammar checker. I hate grammar checkers anyway - Scrivener just has access to the built-in OS X one.
All the best,
Keith