Hi,
Very weird, and inconsistent, bug here.
I recently upgraded to Windows 10 and, while Spine itself is working absolutely fine, when I drag the window to my second monitor, it [Spine] crashes - "Unexpected Error".
It doesn't do it every time, but when it does, it seems to do it every time until I reboot the system.
My second monitor is attached via HDMI, both the laptop and external display are running at 1920x1080. Unfortunately I have not had the opportunity to test on a different monitor yet, but will as soon as I can