tjcbs

And also (sorry to pile on!), it is very easy to lose your work by closing the program without remembering to save

Also, I like the 'constant compilation' feature, but IMO it happens way too frequently. Maybe after 5 seconds of not typing?

Great! A few additional minor problems I noticed: In the UI designer editing the 'max' field screws up the value in the 'default' field. The program shouldn't warn that the .cs file already exists when you save it if it knows that is the file you are editing.

I don't understand how you are supposed to iterate? Once you have already made a dll, you can't save your updated plugin, because paint.net must be open to be using this, and the file is locked. So, every single time, you have to make a new name for the dll, close paint.net, and copy it??