It appears that all went well (although it did take approx. 12 hrs) to 'rebuild' a 34GB Library... but it did it this time without all the stops due to iPhoto failing to close. I'm guessing that if there was a problem with a photo/file/album in the library, it was in the first half. (but who knows)
Both Libraries seem to be working fine now.
I 'thought' that when I bought this computer (it's relatively new) that I asked them to 'max out' the memory... but looking yesterday, as you suggested, I realized that there is two unused slots and I can double my memory.
I'll look into doing just that.
Thank you.
Also, if I haven't mentioned it before... iPLM has an UPDATE out.