On Add to Collection: ?:0: attempt to compare two nil values

[DanielB_17]

Greetings.

I recently updated to the 10.0 release and have started receiving this error in some but not all cases.

"?:0: attempt to compare two nil values"

I am trying to add photos to various collections and occasionally this error pops up in a dialog and fails to add. I can add other photos to the same collections. I can also add the same photos to other collections. But certain specific combinations of photo and collection give the error.

• I have Optimized my Catalog, restarted Lr, and restarted my computer.
• The problem feels like it os occuring more often as I go.
• It seems somehow correlated with trying to add to several different collections whiling changing my selection in between, but... I haven't been able to nail down a repeatable pattern.

I would very much appreciate any assistance. I do see a reference to this error in the forums, but from 2016 for a very different context, and the solution relies on dead links.

[AxelMatt]

Do you have a plugin named Logitech Options? If yes please deactivate tihis plugin and try again.

Please take a look here:

https://community.adobe.com/t5/lightroom-classic/lr-classic-9-1-error-quot-an-internal-error-has-occ...

https://community.adobe.com/t5/lightroom-classic/lightroom-classic-quot-an-internal-error-has-occurr...

To insert screenshots, please use in the future the "Insert Photos" icon in the toolbar, so that we don't have to download them. Thank you.

[DanielB_17]

Thanks.

I do not have the Logitech Options plugin installed, but I *do* use the Logitech Options App for my mouse. I searched around and did find the plugin file (LogiOptionLr.lrplugin) on my system, but Lr does not list it in the Plugin manager.

I did have 2 3rd party plugins which I have disabled and restarted Lr, which did not help.

At this point I tried adding, enabling, disabling, and removing the Logitech plugin, just in case it was somehow stealth-installed or had left residuals even though I never knew it existed and never installed it on purpose... Alas, this did not help either.

Anything else I can try? The Logitech thing seems like quite a coincidence, but the normal solution isn't helping me...

[GoldingD]

I tried adding, enabling, disabling, and removing the Logitech plugin, just in case it was somehow stealth-installed 

Tyically gets installed durung mouse/keyboard druver update.

[GoldingD]

The Logitech thing seems like quite a coincidence,

known buggy plugin, That is wyh members inquire 

[GoldingD]

Please post your System Information as Lightroom Classic (LrC) reports it. In LrC click on Help, then System Info, then Copy. Paste that information into a reply. Please present all information from first line down to and including Plug-in Info. Info after Plug-in info can be cut as that is just so much dead space to us non-Techs.

[DanielB_17]

Lightroom Classic version: 10.0 [ 202010011851-ef6045e0 ]
License: Creative Cloud
Language setting: en
Operating system: Mac OS 10
Version: 10.15.7 [19H2]
Application architecture: x64
Logical processor count: 16
Processor speed: 3.6 GHz
SqLite Version: 3.30.1
Built-in memory: 32,768.0 MB
Real memory available to Lightroom: 32,768.0 MB
Real memory used by Lightroom: 2,034.3 MB (6.2%)
Virtual memory used by Lightroom: 11,115.9 MB
Memory cache size: 103.0MB
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: 75MB / 16383MB (0%)
Camera Raw real memory: 78MB / 32768MB (0%)
Displays: 1) 5120x2880, 2) 1920x1200

Graphics Processor Info:
Metal: AMD Radeon Pro 580X

Application folder: /Applications/Adobe Lightroom Classic
Library Path: /Users/berdine/Pictures/Lightroom/DPB Primary LR Catalog-v10.lrcat
Settings Folder: /Users/berdine/Library/Application Support/Adobe/Lightroom

Installed Plugins:
1) AdobeStock

[GoldingD]

Just the one plugin?

Plugins can be buggy

[johnrellis · Accepted solution]

A number of people have reported this error when adding photos to collections after updating to LR 10.  Please add your constructive opinion to the bug report:

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

 and be sure to click Like and Follow at the bottom of the first post. That will make it a little more likely that Adobe will prioritize a fix, and you'll be notified when the bug's status changes.

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[johnrellis · Accepted solution]

Also, as a workaround, select the target (destination) collection, do the menu command View > Sort, and choose a sort order other than Custom Order.

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[DanielB_17]

Excellent observation!! I didn't even realize some of the collections had somehow been set to custom order. I pretty much never do that on purpose so it never occurred to me to check.

This is almost as good as a fix for my workflow 🙂

[robd93792970]

Fantastic. Thanks. You saved me hours of frustration.

[ARL59]

This exact situation just happened to me, and this was the solution! thanks

[defaultq7gu4jobuid8]

THANKYOU! 

That worked for me as well. 

[Jbean25]

I'm having the same issue, starting tonight, and a google search led me here. Changing the target collection sort order to something other than Custom fixed the problem for me. Very frustrating! Thank you for supplying a temporary workaround johnrellis!

[photoartbycarolyn725]

This has been bugging me too, and the workaround you have suggested does seem to work.  Mine happened after update.  Wish I'd searched more thoroughly earlier.  I just found this today.  Would be nice for Adobe to send out a notice of this problem and the workaround.

[B.S. + Lykkefund Paper]

...just got the same problem...  "?:0: attempt to compare two nil values"...

seems like adobe itself has to fix it...got no solution by myself...

[MerkurNJ]

Changing the target folder from Custom order to date order fixed this for me.

Paul

[Michael F 66]

Changing the target folder from Custom sort order to something else worked for me too. But I usually have my Collections in Custom order, so this is an annoying glitch.

[photoartbycarolyn725]

I usually have my collections in Custom sort order also, so find this
glitch annoying too.

[deniset38361274]

Thanks. That worked for me. 😉

[Crewchief]

Having the same problem as well after the update, the work around worked out for me. I don't usually change the sort order off Custom, so this didn't occur to me.  Thanks for a temporary solution. 

Adobe, please fix!

[lukasw60000753]

Unfortunately I didn't work for me. I changed the destination (target destination) and the sort order but with no success. Yesterday it was working fine and now all of sudden this. I uninstalled LR and installed it again without success. I hope there is a fix soon because this is super annoying. I will try it on another Mac, maybe there is works.

[johnrellis]

Another workaround that's helped some: Create a brand new collection.

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