Hello.
I am a c/c++(Windows, Visual Studio) developer.
I am biginner in macOS, Xcode, and Objective-C.
The five plugins included in the Glyphs Plug-in SDK, Filter, Palette, Tool, General, and Reporter, were tested successfully, but the File Format Plug-in is failed. (It is not visible in the Export Dialog.)
Please help me how to solve the problem.
From what I can see in the info.plist, you have a class name with a period in it. That is not allowed.
in objectiveC, call names are usually build by using your names initials + the class name in camelCase. In your case that could be KKMultiplePluginFilter and KKMultiplePluginPalette.