Game worked fine until update now it give me a java error and my employees have disapeared

Game Dev Tycoon bug
#1

Uncaught error. Please report this to support@greenheartgames.com:
Uncaught Error: InvalidStateError: DOM Exception 11
(file:///Applications/Game%20Dev%20Tycoon.app/Contents/Resources/app.nw/compressed/codeNw.js:1361)

#2

Please do as the message tells you and report to support@greenheartgames.com