I am making a new product (mod). We are doing them for several CMS's and Forum platforms.
There is very little code in it right now. To prove it, i made the smallest possible product, with just an option, and a plugin that tries to modify it - on a vanilla install 4.2.2. I have attached the xml file for this test product.
What I am looking for the shortest plugin code that will save an arbitrary option in an arbitrary product.
And here is the error: