Very strange iMac problem

[Antsz]

Hey

I bought my first iMac 2017.27" last month for my photography editing and it's so much better than my old dated PC.
I updated.to OS majave and everything works fine apart from Lightroom cc. Within a minute or two of using it crashes back to my desktop.
Seeing as I use this daily I rolled back to OS high serria and now Lightroom is doing the same even though it worked fine before!

Im really confused by this, I have spent close to 6 hours with the Adobe techs who took remote control of my Mac and they were baffled too with no answers!

Any help guys ?

Thanks
Ant

 

[mikehalloran]

Read my thread on APFS Snapshots. You can restore your entire system to the state it was in before you installed Mojave.

http://www.motunation.com/forum/viewtopic.php?f=4&t=64689

If you installed Adobe after Mojave, it will be gone but if you has Adobe running fine over HS, this will restore it exactly.

The only way it won't work is if that state is too old and too many newer Snapshots have been saved. In that case, you have to do a complete Time Machine restore after erasing the SSD and reinitializing as a High Sierra drive—a royal PIA.

APFS Snapshots and Time Machine Snapshots are not the same thing ... except they are, sorta-kinda... it's weird but cool.

 

[Antsz]

Read my thread on APFS Snapshots. You can restore your entire system to the state it was in before you installed Mojave.

http://www.motunation.com/forum/viewtopic.php?f=4&t=64689

If you installed Adobe after Mojave, it will be gone but if you has Adobe running fine over HS, this will restore it exactly.

The only way it won't work is if that state is too old and too many newer Snapshots have been saved. In that case, you have to do a complete Time Machine restore after erasing the SSD and reinitializing as a High Sierra drive—a royal PIA.

APFS Snapshots and Time Machine Snapshots are not the same thing ... except they are, sorta-kinda... it's weird but cool.

I installed Adobe creative cloud after I upgraded from high serria , i then did a down grade back to high Sierra, I'm confused

 

[mikehalloran]

You may have to erase the drive and reinstall HS again. Hopefully, you can migrate your settings and apps from a Time Machine state before you installed Mojave. Now reinstall Adobe and see what happens.