Newer Bugzilla versions support PostgreSQL as bug database. The 'attachments' table has a field 'thedata' of
type 'bytea'.

Now PostgreSQL has two ways of storing BLOBs, see:
http://jdbc.postgresql.org/documentation/80/binary-data.html

The code in 'BugzillaImportBean.java' assumes the wrong one. So the code:

final Blob fileData = resultsSet.getBlob('thedata');

failes with the exception:

"Bad value for type int: <binary data>"

I provide a fast patch for 'BugzillaImportBean.java' for those few out there which happen to have run Bugzilla with PostgreSQL.