Sorry to revive an old thread.
I was playing CoH on my old MacBook a few months ago, but life got busy and I haven't been able to play in awhile. I have a couple of weeks without many obligations, and I was immensely excited to start playing again. But, after downloading the updates on the launcher, when I hit run, the loading screen comes up indefinitely and CoH never launches. I've tried deleting my launcher and downloading and reinstalling it from scratch, but it's just the same issue.
I'm running macOS Catalina, I haven't made any updates since I last played CoH. I really only still have this laptop because of CoH.
Any help would be extremely appreciated.