Not Posting – Debug?

I’m fairly new to wordpress and to site building so this is going to sound “sad”. Every since I updated to 3.9 I have been having problems getting my posts to go over to the site. I can post them but they don’t show up. I contacted my web host and they say that I’m showing an error because of the codes used at blog/wp-includes/formatting.php on line 3019. I tried to load debug bar and figure out the debug process but I really can’t figure it out. I can’t afford someone else to do it so I’ve got to figure this out. Can someone take me through the process to take care of this error?