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