SanDisk memory cards not recognised since upgrade to Sonoma 14.4.1
Have been using SanDisk memory cards in my cameras for years and have connected them to my iMac using a Lexar UDMA CompactFlash SD Reader (USB 2.0). They have always appeared in Finder under Locations. I did usually get a message saying that the disk cannot be formatted but they have always worked.
Since upgrading to Sonoma 14.4.1 they are no longer recognised. I can see the disks being read (light on the front of the Lexar device flashes a few times) but they never appear in Finder and there is no warning message.
This is very frustrating as it's the only way i have of getting my photos from the cards onto my iMac. Please help with a solution as soon as possible.
Many thanks
iMac 24″, macOS 14.4