Hi Velvet 72 and welcome
Hmmm I dont use OSX but I do know people can have trouble with PS in general in classic mode or OSX itself.It could be that your camera driver does not like the situation......but I am not sure on that,I do however know there were issues at one time with OSX and PS and using twain acquire for some devices.
Opening PS and then using the import menu to import your pics might bare some fruit.
Try contacting your local Mac shop or mail the camera maker,it could save you a lot of time and frustration in the long run.
Sorry I am not familiar enough with the OS to be much help.......I am one of those Luddites still using OS 9.1
Stu.