Importing issues with latest update to Lightroom Classic

So I re-installed the previous version of Lightroom Classic and deleted v.9 and everything works fine. 

Operating on 2018 MacBook Pro (OS Catalina).  Again, I hadn't had issues with Lr up until now. 

Camera - Nikon D850

Lightroom Classic version: 9.0 [ 201910151439-b660523e ]
License: Creative Cloud
Language setting: en-US
Operating system: Mac OS 10
Version: 10.15.1 [19B88]
Application architecture: x64
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: 1,012.6 MB (6.1%)
Virtual memory used by Lightroom: 3,187.6 MB
Memory cache size: 9.4MB
Internal Camera Raw version: 12.0 [ 321 ]
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2,AVX,AVX2
Camera Raw virtual memory: 79MB / 8191MB (0%)
Camera Raw real memory: 80MB / 16384MB (0%)
Displays: 1) 1920x1080, 2) 3360x2100

Graphics Processor Info:
Metal: AMD Radeon Pro 5

1) AdobeStock
2) Luminar 3
3) Nikon Tether Plugin

And what anti virus, cyber security, ransomware, etc is in use. Lately Windows Defender has caused some grief, lately Acronos Active Protection is causing grief.

And what camera?

Your statement "latest update to Lightroom CC" leads to the question on exactly wahat version of Lightroom you are talking about. The product name Lightroom CC is long gone. Current is either Lightroom, or Lightroom Classic. The later being v9

So, please share your System Information as Lightroom reports it. In Lightroom click on Help, click on System Info, click on Copy. Paste that into a reply.

Note that this will also provide some missing info useful for diagnostics. What OS, what GPU, what GPU driver, what plug-ins, etc. 

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