So decryption is working on OOS13? Great. Yes I know there isn't an vendor_dlkm partition on OOS but this is needed to load kernel modules for custom roms. Does it affect you in any way or is it just the error message?
I'm will look how to overwrite the 3.7.0_12-0 but it's just cosmetic.
Everything seems to be working.
The error doesn't bother me.
I have been playing with different application and so far no problems.
Play Store is happy and Device is Certified.
DRM Security Level is L1.
I tried doing a full backup from TWRP.
It got caught on a Google Font and crashed with error 255.
I am going to give Titanium Backup Pro a try.