Post error – will not republish

I discovered that a post is no longer viewable on my site –

http://www.graysharbormom.com/shorebird-festival/

It was there at one time. In fact, if you go to http://www.graysharbormom.com/tag/outdoors/ – you will see a snippet of the post. Click on the title, and once again “content is not found”. I have no idea why this is happening or how to fix it.

I deleted and republished – didn’t work. Oddly, it will appear if the I change the perma-link, but the reason I found this problem in the first place was broken link report. I don’t really want to change the perma-link.

I’ve search “knowledge base” and found nothing similar.