Unable to Use 4-Point Segmentation Tool

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Hi! Any help here would be much appreciated!

I'm new to TagLab and when I try to use the 4-point segmentation tool, my TagLab quits when I attempt to put the last point down. After some searching online, a potential reason for the problem is that I do not have Coraline installed on my computer which is required for tools like the 4-point segmentation tool. However, I own a Mac and further research makes it appear that I cannot download Coraline on a Mac.

Other people I have been working with have Macs and are running into the same problem. I am working with two other people with Macs who are not experiencing the same problem. However, they downloaded TagLab and the program in January of 2025.

Has anyone else had this problem? If so, do you know if not having Coraline is the problem and does an older model of TagLab allow you to access tools without Coraline?

Thank you for taking the time to read this and help out!