IFSTextFileInputStream

One of our java program stops working after we upgrade OS from V5R2 to
V5R3 and move the AS400 to our hosting site. The program is getting
Null pointer error when trying to do "new IFSTextFileInputStream".
Help.....


Below is a clip of the program:
// Retrieve application properties.
String as400UserId = ( String )parameters.get( "-uid" );
String as400Password = ( String )parameters.get( "-pwd" );
String as400System = ( String )parameters.get( "-as400" );
AS400 system = null;
if( ( as400UserId != null ) && ( as400Password != null ) && (
as400System != null ) ) {
system = new AS400( as400System, as400UserId, as400Password );
} else {
system = new AS400();
}
Properties props = new Properties(System.getProperties());
IFSFile propertiesFile = new IFSFile( system, propertiesFileName );
IFSTextFileInputStream fis = new IFSTextFileInputStream( system,
propertiesFile, IFSTextFileInputStream.SHARE_ALL );



Below is the error log:
java.lang.NullPointerException

at java.lang.Throwable.<init>(Throwable.java:180)

at java.lang.Exception.<init>(Exception.java:29)

at java.lang.RuntimeException.<init>(RuntimeException.java:32)

at
java.lang.NullPointerException.<init>(NullPointerException.java:36)

at
com.ibm.as400.access.SocketContainerUnix.getInputStream(SocketContainerU
nix.java:64)
at
com.ibm.as400.access.AS400ImplRemote.signonConnect(AS400ImplRemote.java:
1579)
at
com.ibm.as400.access.AS400ImplRemote.getConnection(AS400ImplRemote.java:
757)
at
com.ibm.as400.access.AS400ImplRemote.connect(AS400ImplRemote.java: 362)

at com.ibm.as400.access.AS400.connectService(AS400.java:751)

at com.ibm.as400.access.IFSFile.chooseImpl(IFSFile.java:486)

at com.ibm.as400.access.IFSFile.exists0(IFSFile.java:887)

at com.ibm.as400.access.IFSFile.exists(IFSFile.java:909)

at com.arch.as400.ciss.CissRunner.main(CissRunner.java:93)

java.lang.NullPointerException

at java.lang.Throwable.<init>(Throwable.java:180)

at java.lang.Exception.<init>(Exception.java:29)

at java.lang.RuntimeException.<init>(RuntimeException.java:32)

at
java.lang.NullPointerException.<init>(NullPointerException.java:36 )

at com.arch.as400.ciss.CissRunner.main(CissRunner.java:158)