My sync gets hung up on one photo, out of 141,000+ and it seems to then cause a consistent memory leak which crashes the application.
I have tried the community-driven methods to find the offending file but the 'Option-Click' on the 'Cloud Icon' doesn't bring up the list of offending files in Lightroom 3.1 (Cloud). There is no log file I can find either.
Any help is most appreciated.
Lightroom version: 3.1 [ 20191126-2330-434c343 ] (Nov 27 2019) NGL Version: 188.8.131.52 Operating system: macOS OS Version: 10.14  Application architecture: x64 Computer model: MacBookPro15,1 / Intel(R) Core(TM) i7-8850H CPU @ 2.60GHz Logical processor count: 12 Processor speed: 2.6 GHz Built-in memory: 16,384.0 MB Real memory available to Lightroom: 16,384.0 MB Real memory used by Lightroom: 1,333.8 MB (8.1%) Virtual memory used by Lightroom: 2,567.6 MB Memory cache size: 118.7 MB Internal Camera Raw version: 12.1 [ 351 ] Maximum thread count used by Camera Raw: 7 Camera Raw SIMD optimization: SSE2,AVX,AVX2 Camera Raw virtual memory: 22MB / 8191MB (0%) Camera Raw real memory: 22MB / 16384MB (0%) Displays: 1) 3360x2100
Graphics Processor Info: Metal: AMD Radeon Pro 560X - 4 GB Graphics Processor Detail: loaded: Yes, supported: Yes, compute: Yes, init: I3_GPU3, hard: success, soft: fail_insufficient_os, wl: Yes, bl: No OS Media Capability: true
Application Folder: /Applications/Adobe Lightroom CC Settings Folder: /Users/dgourlay/Library/Application Support/Adobe/Lightroom CC Library Folder: /Users/dgourlay/Pictures/Lightroom Library.lrlibrary
I should add, I have generated the diagnostic log, and it does list one file as having a sync issue, but gives a number database pointer to the file, not the file name or anything that can actually be queried through Lightroom to find the file.