Hmm, my initial response was as to whether you got a new camera that is not supported by LR 3.x, but when you say you can't install LR4, then that presents a different problem...!
I tried to update a laptop to LR4 from LR3 and it had problems because at the time I was using a "public" internet connection. I'm not sure what the problem was, but when I moved to a different system, it updated fine..!?
I don’t think the update to 4.X is related because I’ve been having the failure to import before I tried to update. I just think it curious that it won’t update, even over my secure personal Internet connection.
How are you trying to install LR4, by hot installing over LR3? Maybe uninstall LR (but make a note first of the registration number, found in Help) and then run a registery cleaner, like CC Cleaner before trying LR4 again.
Also, regarding the importation problems, where are those files located? How about if you transfer them to your HD by other means outside LR and then import using Add?
A couple other things you can try; creating a new empty catalog and/or deleting the Preferences file.
Importation is usually done straight off of my CF card as soon as I plug it into the computer. It prompts before it imports anything, so I have the option to select what I want, but it used to always open LR as soon as stuck a CF card into the slot. Not anymore. Via Windows, I can still see my files on my CF card, but LR doesn’t want anything to do with them. Well, more accurately, as soon as I hit the import button, LR stops working, so it’s not like it’s refusing to read the CF card; it never gets that far. On my other computers, importation works fine as always with the same CF card(s).
I haven’t tried Add nor have I tried deleting the preference file. I’ll look into this.




