This issue mostly happens on Windows with incompatible ASIO drivers but it can also happen if a plugin crash due to its inability to handle sample rate changes that occur after that plugin has been loaded.

Try one of the following:

1) Stop Gig Performer from automatically loading the last gig file:

Please read this article to learn more. Afterward, open Audio Options and try and change the sample rate.

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2) If that doesn’t work and you’re on Windows, please see this article about the use of ASIO4ALL drivers.

ASIO4ALL v2 Gig Performer

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Related topics:
A plugin crashed – how to find out which one?