After upgrading to Windows 10, the Aria Standalone players (both 32- and 64-bit) no longer create a main window because they're too busy enumerating billions of nonexistent audio devices. I can see them in the Task Manager, and they are using a significant amount of CPU.

Looking in the logs (in %UserProfile%\AppData\Roaming\Garritan\ARIA Player), it loads the ASIO driver for my sound card (M-Audio Delta 1010LT) and successfully goes through all of its input interfaces, but then it lists the first output interface and throws an error ("Internal PortAudio Error". And then it expresses the mistaken belief that there are 4294957296 audio devices in the system, and tries to enumerate every single one of them (getting null pointers all the way until I eventually kill the process).  See http://pastebin.com/4hHaXWUj for an example of one of the log files.

Everything seems to work fine running as a VST under SONAR. (Perhaps unsurprisingly, the Plogue sforzando version of the standalone player exhibits the exact same issue, with virtually identical log files.)

I'm running Windows 10 (build 14393), Aria Player version 1.872, M-Audio Delta drivers v6.0.8 (the latest version available from M-Audio - though they show up in devmgmt.msc as 5.10.0.5078, even after a complete removal and reinstall).