[Zope] SQLSession Chokes on Hyphens (-), Spaces, and punctuation

I'm using SQLSession to manage sessions on my zope site. I need to store member ID's which may or may not contain hyphens, or short sentences describing a diagnosis which usually includes one or more spaces. SQLSession accepts the item, but the next page it tries to load comes up with "improper padding" and errors out on the SQLSession code. HELP !!