I've installed an XP Pro guest on my MacBook Air with Fusion6 and have an odd printing problem.

My printer is a network share on my Win7 PC and works fine when printing from the Mac.
The XP VM is set to share the Mac printer, but when printing nothing happens, the Mac print queue is not activated.

When opening the printer queue, the print is on hold for authentication, and although the password is stored in keychain, it will not print unless this procedure is followed every time.

Would appreciate some input as to what may be causing this & how to fix.