The bug that I fixed was in the driver. Session management software doesn't matter until it connects to the indi server. And it didn't matter if the camera was used for guiding or main expositions.

Long story short: the driver didn't wait long enough (sometimes didn't wait at all) for the camera to finish the exposition.

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I've had a very similar issue recently. I was able to debug it and prepare a fix. It has been merged to master today. Can you confirm that it fixes things for you, too?

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