Tip 11 – A few clubs are having problems with posts.   I recommend that you create a text module with the post information and if that works, trash the blog module which is having problems.   You can go to your post(s) copy the contents and then past them into a text module.
Other possible fixes include updating your last post and/or updating the blog module.  Sometimes duplicating (cloning) the blog module and if that works, trash the older blog module.