Thanks for the input. I did try recompiling the drivers, but it did not help.

Just by dumb luck, I found something that fixed the problem. Redoing the process shown in 'Building INDI Tutorials' under Develop => Tutorials on the INDI web page to build and install the tutorials fixed the problem. (Somehow) The Generic CCD example and my drivers now work again. I would like to understand it, but I am glad it is working now. I am going to be reluctant to upgrade again in the future.

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