A java Exception occurred in the process

[S0ulf3re]

Uncaught Exception:
TypeError: Cannot read property 'isDestroyed' of undefined
at Object.isWindowVisible (/Applications/Mouseless.app/Contents/Resources/app.asar/background.js:2:298319)
at Function. (/Applications/Mouseless.app/Contents/Resources/app.asar/background.js:2:298597)

steps to reproduce:
Press the reference shortcut while in safari

[DigitalGreyHat]

btw: this is not a Java error, it is a JavaScript error!

[svenadlung]

@S0ulf3re could you explain what exactly "reference shortcut" means or what key combination it is?