Thanks for the advice. I was able to download the files by finding the icon and transferring to the HD. My iMovie 8.0.6 does not convert from .MTS, so I tried several conversions. Brorsoft seemed easiest, albeit with the watermark.
My iMovie does not allow "automatic" or "manual" choices. Need new OS and new peripherals.
I deleted the downloaded files from the camcorder.
Normal transfer, and fool-proof until this episode, is simple transfer from Sony via IMovie.
I have a Sony HDR-CX290 hooked up to my Intel MacPro OS 10.7.5, with iMovie 8.0.6 ('09), and have made excellent videos for a year or so. But I had a problem. I filled the internal memory, and transferring to my Mac left some files not transferred. I deleted the successfully transferred files, then tried again. iMovie found the deleted files but not the untransferred files. I do not think I changed any settings. The only difference I can see is that I filled the internal memory, for the first time. Anyhow, iMovie does not recognize the remaining files. Any help would be appreciated!

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