Check if you need to change any .plugin_name to plugin_path and then update the API version in the manifest to 3
The rest you can check in this topic (It is in the scripting related forums, i now also have pinned it for easier finding):
http://www.renoise.c…opic=32699&st=0
Though, currently you now also can call a favorite plugin directly from the context menu now with a native function.