Photos Library created in Mac OS 10.13 High Sierra not working correctly in Mac OS 11.5 Big Sur - blank thumbnails and missing pictures
Hi All,
Pictures in Photos Library created on Mac OS 10.13 High Sierra with Photos 3 do not appear correctly on Mac OS 11.5 Big Sur in Photos 6 -
Of almost 6,000 pictures in the 2 GB Library, the majority are blank thumbnails or are missing.
1. Photos Library and copies made of it open and pictures appear correctly on the 11" MacBook Air running Mac OS 10.13 High Sierra it was originally created on.
2. Photos Library was copied to a 13" MacBook Air running MacOS Mojave 10.14 and all pictures appeared correctly.
3. After the 13" MacBook Air was upgraded to Mac OS Catalina 10.15, and then Mac OS Big Sur 11.5, the pictures do not appear correctly.
4. Library Repair Tool was run on 13" MacBook Air running Big Sur 11.5 with Photos 6 but that did not solve the problem.
*** Testing on other Macs shows copies of the library open correctly and pictures appear correctly in High Sierra (Photos 3) and Mojave (Photos 4) - but not in Catalina (Photos 5) or Big Sur (Photos 6).
How can this be corrected so all the pictures show up properly on the 13" MacBook Air running Big Sur?
Thanks