Version 5 is not able to convert a file from version 2.0, you would need to convert it first to version 3 then 4 to work with version 5. If you have the data in a text format you should be able to import the data into a new file. Is this contact or calendar data? In Contact, create a new contact file, go to File > Import and select the text file. This should give you the Import wizard where you match the fields so the data imports into the correct fields. If it is a calendar data, you need to know the field order before you can import the text. If still having problems you can create a support ticket in the support section of the web site and attach the version 2 file and text file, and we can try to get the data converted.