With latest Mac Version P4Merge no longer launches and I cannot figure out why?

[gary_frank1]

I have a merge conflict and P4Merge no longer launches. The small window pops up and quickly disappears when I right click on the file to resolve conflicts with external merge tool. I downgraded to version 4.2.14 (297) and still canon launch P4Merge. Nothing has changed with P4Merge I only upgraded to the latest Sourcetree.

[Tomislav Tobijas]

@gary_frank1, so if you go to the version you previously used, the merge works? 4.2.14 is the latest version (if looking at download archives)

I don't have a Mac, so I cannot test this out, but I've checked official features and reported bugs, and couldn't find anything related. 👀
There are these, but they are related to some older product versions.