Warning message "There are problems with the connection to the TIBCO Spotfire Server..." displayed when accessing the TIBCO Spotfire Server Administration Console

Warning message "There are problems with the connection to the TIBCO Spotfire Server..." displayed when accessing the TIBCO Spotfire Server Administration Console

After logging into the TIBCO Spotfire Server Administration Console web page, a pop up message is displayed with the warning:

"There are problems with the connection to the TIBCO Spotfire Server.
Please restart the Administration Console.
If the problems remain please contact your system administrator.
The HTTP status code is 500."

Refer to the attached (Filename: SpotfireWarning.jpg).

Once you click "OK" and then access the "Deployment" tab, the deployments will be empty where as previously there were client deployments.

On the Spotfire server machine, look at <install dir>/tomcat/Logs/catalina.log, you may see the following:

SEVERE: Exception while dispatching incoming RPC call

com.google.gwt.user.client.rpc.SerializationException: Type 'com.spotfire.gwt.shared.adm.DeploymentDistributionDTO' was not assignable to 'com.google.gwt.user.client.rpc.IsSerializable' and did not have a custom field serializer.For security purposes, this type will not be serialized.: instance = com.spotfire.gwt.shared.adm.DeploymentDistributionDTO
        at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serialize(ServerSerializationStreamWriter.java:667)
        at com.google.gwt.user.client.rpc.impl.AbstractSerializationStreamWriter.writeObject(AbstractSerializationStreamWriter.java:130)
        at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter$ValueWriter$8.write(ServerSerializationStreamWriter.java:153)
        at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serializeValue(ServerSerializationStreamWriter.java:587)
        at com.google.gwt.user.server.rpc.RPC.encodeResponse(RPC.java:631)
        at com.google.gwt.user.server.rpc.RPC.encodeResponseForSuccess(RPC.java:497)
        at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:589)

  This is usually caused due to a stale browser cache. There may be some stale information/requests being sent from the browser to the TIBCO Spotfire Server.

Clear the cache on the web browser or use a different web browser.