So I installed the program and it came up and started scanning my computer and stayed doing that until I killed it. I tried to set it up to scan again, this time using a smaller area of the disk, but it still went off into never-never-land. The only way I could get it to work is to scan a single directory that has no directories under it. That makes it unusable for me, even if it does see/file/etc PDF files. Very disappointing.