I got a crash when I tried picking up a backpack using carryon+ ....idk if it is an issue with your mod or the other.

https://pastebin.com/e0pGsrFV

Somewhat of a duplicate of #92. See asiekierka's response here. But I'm leaving this open since it's still a reoccurring issue.

I'm not sure how CarryOn manages to mess up our "facing" value. It could also be an issue on our end but I wouldn't know. I suggest you contact the CarryOn+ developer(s) and let them know. In the meantime, blacklist backpacks from being carried.