I installed zimbra 4.5 RC1 and have had a lot of success with it so far. Today I was trying out the Notebook/Documents section, which I haven't done before. It works just fine for typing/formatting text, inserting documents via upload and inserting images, but when I try to insert a spreadsheet I get a dialog that pops up saying

Can't deserialize component - TypeError: _903 has no properties

And then there is a big empty space in the document that says
Error in template 'ajax.dwt.templates.Widgets#DwtDialog': template not found

I think that i have correctly initialized the global and domain documents using the wizard in the admin console, and I can do just about everything else it seems with the documents.

Any suggestions?