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Spirent KB Article
Doc ID: FAQ17969
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VR5:Why I could not play IQ Play file on my VR5?
If there is no compilation of IQPlay file and once you hit play, the IQ Play status does not show which state is being played
Try to clear all temporal files under D:\FTProot\Spirent\VR5\FDP
Re-enable IQ Play again and you will see the compiling progress.
Product : VR5