Hi, I've just tested same more and got more feedback. This all on save which was originally 2.7 when new char, now updated up to 2.8.1 with this load order http://pastebin.com/RKQinbyT and the save is 81 hours long.
As soon as I select the option which opens the barter window these 2 errors pop up: http://pastebin.com/6ciVXA3L
then I hear my items he doesn't want disappear and while I try to barter remaining items none are moved but on each click this error is produced in console: Original Container Ref: NONE
after I exit the barter and dialogue with Casdin these error (this many times) pops up: http://pastebin.com/3McSQ6jK
then he returns all items (I hope all lol, of note are the items such as 4d storage device from AWOP is readded but it's effect is not reapplied = need to drop them and pick them again) and what is somewhat interesting is that the weapons get rebound to the hotkeys, BUT not all of them:
weapons that were on 3,5,6,7 rebind correctly
weapons that were 1,4,8 do not rebind and have to be rebound manually (if it's relevant they were 1 - Liberator (melee 1h, no mods), 4 - Service Rifle Mk II (from AWOP) with non-WMX mods (using the reflex sight mod on service rifles), 8 - Wattz 2000 Rifle with all WMX mods.
Would it be helpful to you if I tested on new character? If so, do I need to play the whole Vault 101 or is it irelevant to the issue and I can just coc there form menu ? With all my mods or with vanilla TTW only?
Kill me again or take me as I am, for I shall not change.