Ive been running convenient horses for a long while now with no trouble, but ive come to the point that when i open the Horse Sack menu, my game crashs, and this seems to be also effecting other menus, such as a hotkeyed bag of holding, or the regular inventory menu, But im wondering if its with Convienient horses because other menus i can open several times if not sometimes indefinately before something goes wrong, only for me to try and open the horse inventory, and bam my game crashes, no warning no errors, just closes the game. Could this be some kind of scripting error? maybe SKSE? Im really not certain

I got CTD in menus due to the SkyUI update, because I had loose files in data folder from previous installations. I'd recommend checking for those files in the data/interface folder. And the installing the latest versions of all menu-altering mods you have. And of course update SKSE just in case.

If you use SkyUI, what version are you using, and does this happen with SkyUI disabled?