Apple has officially released MacOS 11.0 Big Sur, which eliminates support for 32-bit applications.

Please read this knowledge base article before upgrading.

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Use this form to submit a support request. Rational Acoustics support runs 9:00 AM - 5:00 PM EST, Monday through Friday. While giving us your license number / account name is optional, it will help us expedite the support process if provided.
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