holy moly, thanks for the info. The check involved, checks if ltnc's data table exists AND if the window is valid (for a specific player index)eduran wrote: ↑Mon Apr 01, 2019 7:04 pmIs this error-message shown when some UI element is invalid? If so, I think you have to start working around that issue by rebuilding your UI whenever this error occurs.
Background: I've had errors like that reported about LTNT quite a few times. My suspicion is that some mods call clear() on root UI elements when they want to clear their own UI. Since all mods have access to all modded UI elements, that also deletes your UI. Problem is, you only notice it when someone clicks your combinator. By that time it is near impossible to figure out when and how the UI got deleted. I am still hoping for a report were only a few other mods are involved. But so far, these cases always had 50+ mods active and I am not going to wade through all that code to find the culprit(s).
Can you post your full mod list? I want to be sure its not ltnc.