Worked Great!!!
Converted 10,000 emails from Outlook 2011 to Apple Mail in 10 minutes. I did not find any errors with the converted emails. It worked great.
FYI: if you need to only transfer contacts or calendar events into Apple Contacts or iCal, all you need to do is set the sync option in Outlook. No need to spend $40 on this app for that.
cindyordon about OLM Converter Pro - AppEd