Ok, that's an indication that there is something wrong in the Bashed patch. Probably one of the most difficult things for others to troubleshoot for you, as only you can see it.

Some tips;
1) Don't check every category and assume it'll work - it won't. Go through each category on the left side slowly. If there are any of your mods listed in the right hand side, then check them and check the left side category.
2) Everything in Merge Patches should be checked.
3) Typically everything in the Import categories should be checked.
4) If there's no mods listed on the right side when you click on a category, then don't check it!
5) Any of the Tweak categories are optional. Since this is your first time, I'd suggest NOT checking anything here.
6) Cobl Catalogues and Cobl Exhaustion are only if you use Cobl.
7) If there's anything listed under Leveled Lists, check that category.
8) If you have any race mods or body replacers they'll be listed under Race Records, so check that if there is.
9) DO NOT check Replace Form ID's.
The Wrye Bash Pictorial Guide linked several posts up is an easy to follow guide for first-timers. Have you looked through that?