"[NOTICE]" About the support for Mac models
Cubism Editor is not supported with Apple M1 processors.
Please refer to System Requirements
We will not respond to any related inquiries with this message.
Please note that Cubism SDK is not supported with Apple M1 processors and macOS 11.0 Big Sur.
The project file was originally started within the free trial. Its resolution was above 2048x2048 but I have since lowered it back down. I can't find anything else in the project that might prevent me from saving it.
Here's a picture of the model statistics.