LR 2.6 closes when trying to open catalog

Question

i know my catalog must be corrupt because i can open other catalogs just fine.
is there anyway to fix the corrupt catlog? is the only option to use the latest backup?

Answer 1

Have now done what you have suggested Victoria; am downloading a memory card now and, so far, it seems to be working satisfactorily.   I notice that Lr 2 and 4 also have this AGPREFS File; should I therefore delete this one as well, if I purchase LR4.1?   Victoria, do I retick the 'Store Presets with Catelog' again after removing the Agprefs File, or leave it unticked?
No, it hasn't fixed the problem.  As I am about to import a series of new images, another screen of the previous window suddenly imposes itself on top of the importing window, with the result that everything freezes up, and I can't even close Lr 3.6; Lr also sometimes goes into the 'Not Responding' mode for a while--or a black, blank screen appears for about 10 seconds, and even when the screen reappears I can't do a thing with it.   Its very frustrating, especially when one has many images to import!
Gavin, I deliberately don't use a card reader anymore as the 'guide rails' for aligning the memory card that I bought are too short, with the result that several of the pins have bent.   I have looked at virtually all the card readers that are available and find that all 'guide rails' are all too short to effectively and adequately align the memory card!   But what advantage does the card reader have over just using the memory card in the camera?   (Note: the guide rails in the D300 camera are much longer, and therefore there is little chance of the card becoming misaligned when inserting it in the camera.)