SQLException in FogBugz import: Ambiguous column name 'sFileName'

After running FogBugz import I have thousands of these errors in my logs:

2007-07-26 08:58:39,812 Thread-31 INFO [imports.importer.impl.ImportLogger] Created Resolution : Responded with id 6 (42.266s)
2007-07-26 08:58:39,968 Thread-31 INFO [imports.importer.impl.DefaultJiraDataImporter] Successfully imported issue 1 (1 unindexed issues): Issue

2007-07-26 08:58:40,234 Thread-31 ERROR [web.action.util.DatabaseConnectionBean] SQL Exception accessing data.
java.sql.SQLException: Ambiguous column name 'sFileName'.
at net.sourceforge.jtds.jdbc.SQLDiagnostic.addDiagnostic(SQLDiagnostic.java:365)
at net.sourceforge.jtds.jdbc.TdsCore.tdsErrorToken(TdsCore.java:2781)
at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCore.java:2224)
at net.sourceforge.jtds.jdbc.TdsCore.getMoreResults(TdsCore.java:628)
at net.sourceforge.jtds.jdbc.JtdsStatement.executeSQLQuery(JtdsStatement.java:418)
at net.sourceforge.jtds.jdbc.JtdsPreparedStatement.executeQuery(JtdsPreparedStatement.java:693)
at com.atlassian.jira.web.action.util.DatabaseConnectionBean.queryDb(DatabaseConnectionBean.java:268)
at com.atlassian.jira.web.action.util.DatabaseConnectionBean.queryDb(DatabaseConnectionBean.java:252)
at com.atlassian.jira.imports.fogbugz.FogBugzDataBean.getAttachmentsForIssue(FogBugzDataBean.java:106)
at com.atlassian.jira.imports.importer.impl.DefaultJiraDataImporter.importIssues(DefaultJiraDataImporter.java:581)
at com.atlassian.jira.imports.importer.impl.DefaultJiraDataImporter.doImport(DefaultJiraDataImporter.java:120)
at com.atlassian.jira.imports.importer.impl.ImporterThread.run(ImporterThread.java:21)