Here's beta.dd I've rewritten the way the tool saves and sets values between the SKP, ruby and html/js...
I'll now reasonably confident*** that the PC AND MAC versions should work virtually identically. The 'Octane Exporter...' tool should now launch and 'populate' the dialog properly: with any new SKP using the default values for paths etc and all other options 'unchecked', except for the camera which should be 'checked': or when values are changed and then used, and the SKP is subsequently saved, closed and reopened, the last values you used should be used in the tool's dialog.
Note that all options and settings should now be 'available' and capable of being 'activated' and/or changed: however, please see the 'known issues' section in the 'Help' PDF file - particularly regarding setting more GPUs than your Computer has available that might cause Octane to 'freeze'.
***We've been here before But please test and feedback...