yup permissions are fine, I can change connection.ini in Finder
I can launch the app in terminal as standard user no problem
I believe it maybe due to the application calling another application.
I found out this was upgraded to Catalina, I tried using AppZapper and CCleaner to remove any leftover files after uninstalling Deadline, then re-installing rebooting but still same issue.
As a workaround the user opens terminal and runs DeadlineMonitor this way…
There used to be a great OSX app for cleaning up all the leftover bits from applications (rather than just moving the main app to the bin) can’t remember what it was (diskwarrior?)