How to fix Oswatcher error: Can't find bundle for base name oracle.charts.internal.Messages

Oswatcher:  Release 8.4.0

I am running OSwatcher on AIX and I amgetting following error when I try to create a dashbord:

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Can't find bundle for base name oracle.charts.internal.Messages, locale en_US

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Enter 1 to Display CPU Process Queue Graphs

Enter 2 to Display CPU Utilization Graphs

Enter 3 to Display CPU Other Graphs

Enter 4 to Display Memory Graphs

Enter 5 to Display Disk IO Graphs

Enter GC to Generate All CPU Gif Files

Enter GM to Generate All Memory Gif Files

Enter GD to Generate All Disk Gif Files

Enter GN to Generate All Network Gif Files

Enter L to Specify Alternate Location of Gif Directory