I have installed neoload version 5.0 on my MAC.
I am unable to record anything. The browser opens up but no recording is made. The containers are empty.
With NeoLoad 5.0, you need to manually set the proxy of the browser to 'localhost:8090' (see Recorder settings in NeoLoad preferences).
Note that NeoLoad 5.1 planned for end of June provides an official support for OS X, which includes the automatic change of proxy settings for the supported browsers.