Hey
@Lightcathing - Let's give this a try...I suspect this may be an accessibility/permissioning issue since you mentioned that it works with another user login but not yours:
1) Open up the application on your Mac titled System Preferences --->Click Security & Privacy ----> Click Privacy.
2) Then in the left hand column, click on "Accessibility".
3) Click the lock in the bottom left corner of the window, enter your pw when prompted so you can make a change. Press the "+" icon and add OBS (and make sure it's selected).
4) Restart computer, and launching OBS from terminal again using:
Bash:
/Applications/OBS.app/Contents/MacOS/OBS; exit
Let me know if this fixes it or if not, post the log file and any relevant screenshots.