Hi,
I am also trying to use this plugin.
Have found the snippets of code to update for 2.3 (I think) here…
https://wordpress.pastebin.ca/852545
But I still have a problem on my local install on mac OSX
You can see the problem here:
Manage –> Custom Write Panel
https://img69.imageshack.us/img69/4584/customwritepanelerror2cbe9.png
options –> Custom Write Panel
https://img47.imageshack.us/img47/7836/customwritepanelerror1cnd0.png
Any advice on how to fix this would be very much appreciated.
There does not seem to be any official support right now, which is a shame as it is a very powerful plugin.
Thanks,
Chris