When I have Vicster's inventory insight addon active, I get a certain UI error message:
I have managed to succesfully isolate the conditions that reproduce the problem:
The error appears when you switch between the primary and secondary weapons. However if you relaod the UI the error does not reproduce itself when switching weapons, until you pickup an item either from loot or mission reward. I tried viewing the inventory a couple of times in case it's related to the "new" attribute in inventory, but nothing seems to correct the problem short of a reload ui command.
Note that if I disable Vicster's inventory insight addon, the problem goes away.
Now, I wouldn't make a fuss about it if the error window didn't cover half of the display and in the cernter of it. You can imagine how inconvinient it would be during combat to have to go into cursor mode to press the "dismiss error" button.
I'm not asking for a fix here but rather a workarround so that the error message does not appear.
Here is a list of my other plugins in case something is known to conflict with vicster's inventory insight: