SmartCrawl error to post new or updated article

My website was normal, after install WPMU plugin, I modify an article and receive the message error:

The page isn’t working didn’t send any data.


I deactivated WPMU plugin, one by one, until that found plugin that happend this. Is SmartCrawl.

I deactivated SmartCrawl and don’t receiv more error.

Have solution for this?