The application isn't compatible with the OSX Yosemite. This is specified on the system requirements page provided by the developer.
Mac OSX 10.4.8, 10.5 to 10.9. Yosemite compatibility not confirmed. (PWC download only) - The Wine Curators.
System Requirements page: http://www.thewinecurators.com/techSpecs.shtml
There was the statement that the software will be migrated to the cloud which means you will be able to run it on every device that has a compatible browser, ignoring the operating system.