Hi Andrew,
We are unable to reproduce sample not working issue in Silverlight 5 beta installed on XP(32 bit and 64 bit) and
windows7 environments.Some of the screenshots attached for your reference.
It would be helpful to us if you provide us any video illustrating for this issue.
Please let me know in case of any queries.
Regards
SuryaNarayanan
99855_87779eee.zip