hi spitfire,
this error is because you have downloaded a map that uses “relationshipTypes”, which is a feature that is used in TripleA version 1.4 and later.
TripleA 1.3.2.2 (the one you are currently using) does not recognize this feature, and will throw this error at you every time you start triplea.
This error actually will not prevent you from playing, or from downloading maps, or anything else.
But since the error is annoying to see every time, just delete or move the offending map zip folder. Maps are located at:
(Windows) C:\Documents and Settings\YourName\triplea\maps
(Mac) /home/user/documents/triplea/maps
(Linux) /home/user/triplea/maps