Lightroom 4.4 crashed on Windows 7 Laptop, lost catalog info, won't import half my images.

Question

Lightroom 4.4 crashed on Windows 7 Laptop today, lost catalog info, won't import half my images.
Not only is LR messed up, it deleted my day's shooting. Can't believe that.
Now it won't import (i.e. re-import) half my files.
Imported half, but had errors importing rest.
Corrupt catalog?
When I try to import the folders, it recognizes that they are in the catalog (I have "don't import duplicates" turned on).
After running through all the folders, it says, "Nothing to Import."
Any help?
Best,
Peter

Answer 1

Thanks dj_paige.
I installed a plugin, coincidence makes me thinks this might have cause a LR4.4 crash.
After rebooting my windows 7 laptop, LR had lost record of half my directories on the external drive, as seen in Library Module.
In Windows Explorer, the folders and images are still there.
I tried recovering the lost folder references in LR by doing an import on the external hard drive again.
It took about a half hour to run.
There was a report screen at the end of the process that said that LR was unable to import something like 1500 images.
I did not save the report screen. Maybe it is part of a log file somewhere to give you what it exactly said?
I do not profess to understand how catalogues work under the covers.
I only use one catalog at this point.
My guess is at this point I should de-commission the catalog (whatever it takes to do that - delete it, etc.) and just do a new, fresh import on my images.
I don't feel I lose anthing this way - I can't see where I would lose anything important. About 5-10% of the RAW images were processed and exported to jpg, just for web use for casual viewing. The jpg's are all still on the external hard drive.
Any suggestions are appreciated.
Cheers,
Peter