Thomas confirmed that we should be using java.io.CharConversionException instead
of sun.io.MalformedInputException - see
http://developer.classpath.org/mediation/ClasspathMigration

Proposed patch:
mport.java.~1.1.1.1.~	2005-07-17 18:55:39.000000000 -0600
--- DSExportImport.java	2006-01-20 13:24:47.000000000 -0700
***************
*** 452,459 ****
  					}
  				}
  				/* Create error message */
! 				String msg;				
! 				if (e instanceof sun.io.MalformedInputException) {
  					String[] args = {String.valueOf(_numEntry), 
  									 e.toString()};					
  					msg = DSUtil._resource.getString("import", "malformedinputerror-label",
args);
--- 452,460 ----
  					}
  				}
  				/* Create error message */
! 				String msg;
!                 /* see if there was an invalid char in the input e.g. a
non-utf8 8 bit char */
! 				if (e instanceof java.io.CharConversionException) {
  					String[] args = {String.valueOf(_numEntry), 
  									 e.toString()};					
  					msg = DSUtil._resource.getString("import", "malformedinputerror-label",
args);