ColorDial crashing with external HDMI monitor

[EdwardBurns]

First of all, I think this is one of the most useful color tools for the Mac that I have come across and love it. Great work!

Unfortunately, it crashes every time I try to use it on my Macbook Pro's main monitor when an external HDMI monitor is connected.

My MacBook Pro specs: Mid 2014 with macOS Catalina version 10.15.2.

Tests:

• Crashes on main laptop monitor when an HDMI monitor is connected
• Works when used on the HDMI monitor
• Works on the main laptop monitor when no external monitors are connected
• Works on the main laptop monitor and the external monitor when used with display port monitor

Hope this feedback helps with development.

Cheers.