In Safari betalabs login and click on Edit (for VE).
"Failed to load resource: The operation couldn’t be completed. (kCFErrorDomainCFNetwork error -10.)" - will be displayed in the console. Also, the same error will be persistently displayed when inserting links, starting editing lines etc.
Could be caused by some incorrect 64base encoding? - http://stackoverflow.com/questions/14678971/safari-error-kcferrordomaincfnetwork-10
Chrome does not display the error.