Lindsay,
It seems that an update may be necessary. Currently the latest version of the software is 1.6.50464, the ActivDriver 5.7.25, ActivHub firmware 5.13 and firmware on the Expression devices is 9.02b39. There is an article on the knowledge base that will help guide you on how to update the ActivHub and Expression devices in case it is necessary. The article is located at www.prometheankb.com, select your region, in the search box type in 10421.
Thanks!