We had the Edit button and a console error when accessing a custom vendor from another plugin. It was HorseSellerFix by RobJ, which adds a horse seller to his combined bandit/outpost prefab.

I'm not sure what's happening with the server error there, but the Edit button being stuck on the screen is a common issue with such "Vendor Fix" type plugins since they, for some reason, all have the same incorrect code, where they create the vending machine entity in such a way that the game object is inactive. This is easily fixed in those plugins by passing true instead of false to the CreateEntity function.

WhiteThunder

I'm not sure what's happening with the server error there, but the Edit button being stuck on the screen is a common issue with such "Vendor Fix" type plugins since they, for some reason, all have the same incorrect code, where they create the vending machine entity in such a way that the game object is inactive. This is easily fixed in those plugins by passing true instead of false to the CreateEntity function.

Thanks for the tip and explanation!