After upgrading from version 8.7.0.Final to version 8.8.0.Final connections via ODBC using Kerberos/GSS stopped working.

When I try to connect with the new version, on the server I get the following error:

12:24:31,755 ERROR [org.teiid.ODBC] (New I/O worker #2) TEIID40015 Unexpected error occurred: java.lang.NullPointerException
at java.util.Hashtable.put(Hashtable.java:514) [rt.jar:1.7.0_55]
at org.teiid.odbc.ODBCServerRemoteImpl.logon(ODBCServerRemoteImpl.java:244) [teiid-runtime-8.8.0.Final.jar:8.8.0.Final]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.7.0_55]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) [rt.jar:1.7.0_55]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_55]
at java.lang.reflect.Method.invoke(Method.java:606) [rt.jar:1.7.0_55]
at org.teiid.transport.ODBCClientInstance.processMessage(ODBCClientInstance.java:127) [teiid-runtime-8.8.0.Final.jar:8.8.0.Final]
at org.teiid.transport.ODBCClientInstance.receivedMessage(ODBCClientInstance.java:116) [teiid-runtime-8.8.0.Final.jar:8.8.0.Final]
at org.teiid.transport.SSLAwareChannelHandler.messageReceived(SSLAwareChannelHandler.java:211) [teiid-runtime-8.8.0.Final.jar:8.8.0.Final]

From the client I get the following message: psql: duplicate GSS authentication request