My wife has me converting AppleWorks files to formats used by OpenOffice today. We're using DataViz Conversions Plus 15-day demo to get things over. Works like a champ under the CodeWeavers CrossOver tool.
And then she gave me a CD to convert with a label on it.
Stuck, stuck, stuck.
But hey, out of all of the different suggestions found on Google, the one that worked for me was to stick a business card into the slot and then attempt to eject, while gently tugging on the card. Worked. Both times.