Hello peter! Thanks ALOT for your purchase, have you tried re-downloading? (Sometimes these downloads can seem to be unzipping fine but get corrupted halfway through) Additionally, did you update After Effects CS 5.5 to the latest version? sometimes this can also be a cause of an “Unexpected data type”

After further reading of this (which you don’t have to read all the way through): https://forums.adobe.com/thread/721806?start=40&tstart=0

People are suggesting to import the project into a new project rather than opening it. This could be a last resort just incase the Updated version of CS5.5 doesn’t cut it.

You can contact me through the profile page for further details and step by step instructions !

Thank you so much!