Error Message:

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Cannot request exclusive semaphores at interrupt time.

Explanation:

Exclusive system semaphores are owned by a task. The system checks to make sure that only the owner modifies the semaphore. It is impossible to determine the requester at interrupt time, so exclusive semaphores may not be modified then.

User Action:

End your requested operation, wait awhile, and retry. If you still get this message, contact the supplier of the running application.