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Hi there,
Sorry that you're getting an error message "error: ?:0: attempt to compare two nil values" while trying to add collections.
Which version of Lightroom Classic are you using and what is your operating system?
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Thanks for your answer Mr Akash
It´s the first time I have this problem. Frequently I made photobooks with the same computer, the same MOS and the same Lightroom.
Mac Os Version 10.15.6.
Lightroom version 2006-2020: 10.0 (202010011851-ef6045e0); Camera Raw 13.0
As you can see in the image, if I made a new album I don´t have problem to transfer the photo, but in the original book with 256 photos its impossible.
Thanks for your help
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Thank you all. Problem solved by following your advice. I have changed the sort order in the Book I am doing and I can now transfer new photos. You have to change from a custom order to another type of order.
Best regards
Manuel Gonzalez Devesa
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Thanks for the update. Glad to know that helped.
~Akash
A workaround that's helped several so far: Select the problem collection and do View > Sort to change its sort order to something other than Custom Order.
For more details and sharing further feedback regarding this issue, please checkout this discussion: https://feedback.photoshop.com/conversations/lightroom-classic/lightroom-classic-when-trying-to-add-...
Thanks,
Akash