well gentlemen I have reinstalled Musicbee and Asio is now working again. My installation must have become corrupted. I have used Musicbee for many years and find it excellent. I run an Evo150 with a pair of B&W 803 diamonds and a pair of Wharfendale airdale sp speakers and the Asio driver from Cambridge works perfectly with Musibee. Thank you for a great program.