Known Issue in Feffox Nests A sound related issue has been confirmed that can cause client crashes in the Feffox Nest instances. A fix for this issue will be implemented in the next client update. In the meanwhile, a temporary workaround is to click on the Tools icon on the client loader, and tick the checkboxes beside Disable Sounds and Disable Streaming Audio before loggin in when planning to enter the Feffox Nest instances. Source...