I've read the release notes, and guess this must be related to the control surface changes to support 16 macros
I also checked the error log, and the line it says is failing (line 44 in APC40_MKII.pyc) relates to create_device. So that would suggest I'm on the right track. I guess it's a case of waiting for Akai to provide a new script?Control Surfaces
Added the following improvement to the functionality of User Remote Scripts:
Device Control:
Up to 16 encoders can be used for controlling Device Parameters.
The Device Activator button can be controlled.
In the mean time, I did think about rolling back to the previous version, but I can't work out how to do that. The archive of old versions doesn't include anything from v11.x