I was looking in a cache for a program and saw that there were a lot of file types listed only as "Document" with no file extension. Here is an example: 0A7D50974BFF28DC45DC276581A6C030 Now, when I press the spacebar for a preview an image comes up...so, this is an actual file...however, not having a file type (even when I do Cmd+I) there is no way to search for these "Documents". Can anybody tell me why this is, what file types these are and how to search for them since the names are randomized and I can't search by file type? Thanks, J. P.S. Yes...I have gone to Finder > Preferences > Show All Extensions....and still these "Documents" don't have a file type associated with them.