image capture no longer recognizes .jpg files

I have HV40 Canon and mini SD. I've been importing jpeg images for years. Now, all of a sudden, iPhoto (image capture) cannot read those file. This may have something to do with the latest updates which I installed last night. Now, even photos successfully imported just before the update, do not import. I get import error "Import error (-9937)" from Image Capture. One of these updates is screwing up my capture. OS X Yosemite, 10.10.3, MacBook Pro mid 2012. Thanks!