Hello, Crimzon_Zero!
- For the AdvSaveHandler, there was a bug where it tried to find the main executable's location but throw that error instead. I'm uploading a patch as we speak.
- For FSDK_CookToolAddOn, could you please provide me with the output of the dev console, so I can see where is it triggered?
- As for the fullscreen plugin, do you use something like Visustella Options Core? If you do, there might be a conflict.
In regards to plugins not working after building: the most likely culprit is that some plugins are trying to find their config by checking their name (rather than using a hardcoded one). If they use something like document.src, then they try to get their name dynamically.