Found the solution! After stating my problem with “Refreshing your media” causing my ClipZip to hang and reading your responses, it dawned on me the problem can’t be the SlotCard or the empty Transcend SDHC card as they continue to work well on my previous Sansa products. Since refreshing the media is a database function, I decided to reformat the ClipZip using its menu and now it completes the refresh cycle.
Thanks for the collective effort that led to some good ole root cause analysis! 
