P: When trying to add files to Collections I get this error: ?:0: attempt to compare two nil values

[Christopher M. Priebe]

I just installed LrC 10 and when I went to add images to a target collection, I get the following error: ?:0: attempt to compare two nil values.  This is really holding me up organizing my photo book.  Please help.

[gadgetgeek2000]

I have tried optimizing the database and restarting Lightroom. Nothing has fixed this issue. I cannot add these photos to my collection.

I use this collection to present photos from different folders together for my photography club competition. I've been doing this same operation for years. It appears there is some sort of error with the updated Lightroom.

[gadgetgeek2000]

I have also deleted the collection and recreated. Nothing seemed to help. But I did have one step that I didn't mention that may be the cause:

Did not work:

1. Create the collection.

2. Added an overview logo slide from one of my other collection folders. That is the "1" photo in the folder.

3. Set the sort order to custom

4. Attempt to add other photos. Get the error.

Worked:

1. Delete the collection. 

2. Set the sort order to Custom.

3. Add the photos to this collection

4. Add the logo and move to the front.

I can repeat this process and get the same error.

[johnrellis]

Why conversations get merged: https://feedback.photoshop.com/conversations/lightroom-classic/lightroom-auto-import-to-folders-orga... 

[gadgetgeek2000]

The entire reason for my collection is to have a custom order of photos from multiple folders. Hoping this gets resolved quickly.

[gadgetgeek2000]

Thank you, John. I searched for my error and did not find any match whatsoever. Glad my report has found the proper home.

The text on the initial post does not list the proper or exact error code.

[johnrellis]

It looks like there are at least two different (though similar) error messages produced by the same underlying problem.

[StormyTheCat]

Are the sorting issues only related to collections in the latest version of Lightroom?  I have tried to reproduce my previous sorting issues without success - but I'm not using collections in the attempts.

[johnrellis]

This thread is about errors when trying to use Sort: Custom Order for collections and folders in LR 10.   

[chrisj68176339]

Your suggested workaround worked for me. Thanks very much John_R_Ellis

[kayesaces]

Thank you, just tried that, it updated the catalogue, deleted several years worth, thankfully I know how to fix that, so that s fine. Tried quick collection again, same error message.

[johnrellis]

Please post a screenshot of the error message or quote it word-for-word.

[FeedbackCommunityMember]

By accident, I found a fix to this problem. I delete all the images in the Quick Collection. Then turned on another collection to be the targeted collection and then right-clicked on the Quick Collection to set it again as the target collection. Now the B puts selected images into the Quick Collection

[kayesaces]

An internal error has occured: ?:0: attempt to repair nil with string

[kayesaces]

thank you posted below.

[johnrellis]

Why conversations get merged: 

https://feedback.photoshop.com/conversations/lightroom-classic/lightroom-auto-import-to-folders-orga... 

[johnrellis]

Leo, see here for a possible workaround:

https://feedback.photoshop.com/conversations/lightroom-classic/lightroom-classic-when-trying-to-add-... 

[FeedbackCommunityMember]

thanks for the workaround!

[alanm98591043]

occurs when pushing "B" to move a photo to the quick collection. Running Lightroom classic 10.0

[SammCox]

Try setting Quick Collection's sort order to something other than Custom.

[alanm98591043]

Thanks very much. That worked. Interesting that it hadn't occurred before

[johnrellis]

Why conversations get merged: https://feedback.photoshop.com/conversations/lightroom-classic/lightroom-auto-import-to-folders-orga... 

[dakotakid_parker]

Just upgraded to LR 10 and started getting this error. Here's my data:

Lightroom Classic version: 10.0 [ 202010011851-ef6045e0 ]
License: Creative Cloud
Language setting: en-US
Operating system: Mac OS 10
Version: 10.15.7 [19H2]
Application architecture: x64
Logical processor count: 8
Processor speed: 2.9 GHz
SqLite Version: 3.30.1
Built-in memory: 16,384.0 MB
Real memory available to Lightroom: 16,384.0 MB
Real memory used by Lightroom: 5,257.3 MB (32.0%)
Virtual memory used by Lightroom: 16,095.4 MB
Memory cache size: 1,103.6MB
Internal Camera Raw version: 13.0 [ 610 ]
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2,AVX,AVX2
Camera Raw virtual memory: 546MB / 8191MB (6%)
Camera Raw real memory: 553MB / 16384MB (3%)
Displays: 1) 3360x2100

Graphics Processor Info: 
Metal: AMD Radeon Pro 460

Application folder: /Applications/Adobe Lightroom Classic
Library Path: /Volumes/OWC BACKUP/LightroomCatalogs/LightroomCatalog-OWCBU-v10.lrcat
Settings Folder: /Users/jamesparker/Library/Application Support/Adobe/Lightroom

Installed Plugins: 
1) AdobeStock
2) Aperture/iPhoto Importer Plug-in
3) Aurora HDR
4) DxO PhotoLab 4
5) DxO PhotoLab 4 Importer
6) Envira
7) Export to Photomatix Pro
8) Facebook
9) Flickr
10) HDR Efex Pro 2
11) Helicon Focus Export
12) Imagely
13) jf Zenfolio
14) Luminar 3
15) Luminar 4
16) Luminar Flex
17) Nikon Tether Plugin
18) ON1 Photo RAW 2019
19) ON1 Resize 10
20) ON1 Resize 2019
21) Photolemur 3

[dakotakid_parker]

Resorting the collection to one of the defaults from "custom" worked as a temp fix. It only started throwing the error after two hours of pulling photos for this particular assignment. 

[FeedbackCommunityMember]

Helped for me to...Thank you.

[FeedbackCommunityMember]

I have the problem too, changing the order isn't working for me either.