I have the current Acorn; 6.6.5 on my 2 yr old MacBook Air. As soon as I updated my OS to 15.1.1 (Sequoia), it crashes immediately every time I try to print anything. My Printer is a new Canon TR4700 series.
Everything is new and updated. I can’t print.
Acorn 6 isn’t supported on macOS 15 (it was released back in 2017). The current release, Acorn 7.4.5, is supported. I’d try running Acorn 7 to see how that works for you.
As a workaround, can you save your image as a PDF and then use Preview to print it?