Thread:Extension talk:DynamicSidebar/Error upon adding group, category, or user sidebar/reply (2)

The patch was made for 1.14. I recommend applying the patch by hand. In all reality, all you need to do is take the code block and add it to the end of that file. This is a *really* simply patch, and I've tested this block addition with 1.16 beta 3. I can promise you it is working. I'm using it in production right now.