["Expected ')'","",1] Error message when starting studio

Whenever I start appcelerator studio, I see the following double error messages in the console:

["Expected ')'","",1]

["Expected ')'","",1]

I have no idea, where this is coming from or which file needs to be corrected. How can I get rid of this error?

Appcelerator Studio, build: 4.3.1.201509302304 OS: Windows 8.1