...and other problems. I have no idea where this is coming from. As far as I'm aware, it's only started happening since I installed SKSE, SkyUI, Convenient Horses and Immersive First Person... and while I imagine it would be the latter thing there, I uninstalled it and nothing changed - the problem remained. So... what else could it be? Is it a different issue entirely? Is it one of those mods? It's really annoying and I can't for the life of me work out what's happening or what's causing it... :S

Removing a mod then loading a save made with that mod will not fix anything, in fact, it will mess things up.

Have you loaded a save (without the mods you just added selected) that was made before you added the mods in question?

Did you follow the install guide for SkyUI? IIRC, there are a few steps to that install.

On the SkyUI Description Page, it says you can simply install it with the NMM... which is what I did. I'll try and load a save from beforehand, but I installed them on quite close to each other, so I may not be able to find files where one's installed and another isn't. But I'll see what I can do... any ideas what it may be, though?

SkyUI wouldn't and doesn't touch your crosshair by itself. And you should be able to install it normally in NMM, i did.

I assume you are MimeArmy on the nexus? have you tried the solutions reported by these users who appear to have had similar problems to you with the crosshair and smithing menus http://forums.nexusmods.com/index.php?/topic/1281377-immersive-first-person-view/page-248#entry14512938