I have looked this over a little bit. From what I see that MAYBE causing issues IMO is this [04:12:58.671 D] Function GetHealth does not exist. That happens from stealth enemy going into or out of cloak at times.
These issues are something I have worked out down to things not being frame locked. Buddywing was always designed for all the custom combats to basically have everything framelocked.
In all honesty Buddywing is coded extremely well after looking over/learning treesharp. It is by far a lot more advanced bot than people realize.
A lot of issues we see in routines while using Buddywing for long periods of time is from things not framelocked and then it seems to throw the bot into a chaos. Then what I think is causing vendor bugs and plethora of other issues.
PS: Was there any items in your inventory that couldn't be sold. Cartel items etc? Since items not on protected items list could cause issues trying to sell even though it can't.