Plug-ins aren't sandbox safe and won't work in Sound Studio?

Our Mac AU format plug-ins are not “sandbox safe” and will not open in Mac applications that require sandbox safe plug-ins. You will likely get an error like “This Audio Unit plug-in has not been updated to be Sandbox Safe and could not be opened”. Of course our plug-ins are not misbehaving in any way, they are simply opening the various needed files (preferences, presets and graphics files). In order to do this in a sandbox safe way, the plug-in requires a manifest detailing all files it needs to access. We hope to support sandboxing in a future release.