# Lightroom crashing when using Negative Lab Pro **URL:** \ **Category:** Lightroom Classic CC\ **Created:** [January 12, 2025, 7:14pm UTC](https://forums.negativelabpro.com/t/lightroom-crashing-when-using-negative-lab-pro/8722 "2025-01-12T19:14:29Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![darrinzl](https://avatars.discourse-cdn.com/v4/letter/d/a5b964/32.png) [@darrinzl](https://forums.negativelabpro.com/u/darrinzl)\ **Post date:** [January 12, 2025, 7:14pm UTC](https://forums.negativelabpro.com/t/lightroom-crashing-when-using-negative-lab-pro/8722/1 "2025-01-12T19:14:29Z")
I’ve had Negative Lab Pro v3.0.2 for quite some time, but have only finally started using it. I’m running Lightroom Classic 14.1.1 on an iMac with Sequoia 15.2, and every time I try to convert a few negs, or do roll analysis, Lightroom keeps crashing. I’m having to do all the conversions one at a time. Can anyone help? Thanks! ---
**Author:** ![LightChaser](https://avatars.discourse-cdn.com/v4/letter/l/d07c76/32.png) [@LightChaser](https://forums.negativelabpro.com/u/LightChaser)\ **Post date:** [November 7, 2025, 4:53am UTC](https://forums.negativelabpro.com/t/lightroom-crashing-when-using-negative-lab-pro/8722/2 "2025-11-07T04:53:26Z")
> [@NLP v3.1.1 crashes when applying roll analysis for a batch](https://forums.negativelabpro.com/t/nlp-v3-1-1-crashes-when-applying-roll-analysis-for-a-batch/9526): > > MacOS Sequoia 15.5 Lightroom Classic 14.4 NLP v3.1.1 Hey I’d like to ask why the NLP crashes and flashes when I click “convert” in roll analysis mode. The pictures remain unconverted and stop at the border buffer preview as if they are cropped. It functions well if I unselect “roll analysis”. This problem appears both for color negative and B&W modes. I tried restarting, reinstalling both LrC and NLP. The bug stays the same. ---
**Author:** ![Bmac954](https://avatars.discourse-cdn.com/v4/letter/b/b782af/32.png) [@Bmac954](https://forums.negativelabpro.com/u/Bmac954)\ **Post date:** [February 3, 2026, 8:44pm UTC](https://forums.negativelabpro.com/t/lightroom-crashing-when-using-negative-lab-pro/8722/3 "2026-02-03T20:44:57Z")
I haven’t done a detailed test on how many pictures I can covert without a crash, but it started today mid use. I get the error “Lightroom unexpectedly quit” but it does the convert. when I clear the crash and report prompt I can apply the changes and Lightroom Classic doesn’t actually crash. I’m using NLP 3.1.1 on LRC 15.1.1 on a Mac Studio M4 Max. I reset the preferences in Lightroom, reinstalled NLP, reactivated my account key… Help me Nate!! ---
**Author:** ![Bmac954](https://avatars.discourse-cdn.com/v4/letter/b/b782af/32.png) [@Bmac954](https://forums.negativelabpro.com/u/Bmac954)\ **Post date:** [February 3, 2026, 9:43pm UTC](https://forums.negativelabpro.com/t/lightroom-crashing-when-using-negative-lab-pro/8722/4 "2026-02-03T21:43:21Z")
After a few hours of testing I thought Vuescan somehow may have been tripping me up. I seemed to get the error while my Epson 4490 Photo plugged in through a USB hub was scanning to memory, not writing to disk. But, the error just quit. doesn’t matter if I convert a few or many with or without Vuescan scanning. So far it’s good, but im expecting it to reoccur randomly. Dunno 🤷‍♂️ ---
**Author:** ![Bmac954](https://avatars.discourse-cdn.com/v4/letter/b/b782af/32.png) [@Bmac954](https://forums.negativelabpro.com/u/Bmac954)\ **Post date:** [February 4, 2026, 9:53pm UTC](https://forums.negativelabpro.com/t/lightroom-crashing-when-using-negative-lab-pro/8722/5 "2026-02-04T21:53:17Z")
…and it is in fact acting up randomly. If I can provide any info or files to anyone smarter than I am with this issue to figure it out, just let me know. I guess I’ll just live with it for now.