As holophonor pointed out above, the word is spelled "similar." "Simular" is something else, having to do with simulated. The menu option, the URL, the "There are no simular shows added" and "Add Simular Show" all have the word misspelled. If there are any other places you have the word, you should change those, too. Also, do you mean to have an empty line below that option in the menu?
(I'm putting this here instead of the Spelling thread because the things pointed out there haven't been fixed in ages. Um... hint, hint.