I've been having a problem copying and pasting file names for the past few days. Before that, I was able to name a file, copy part of that name, and paste it into the name of another file. For example, let's say I have 2 of the same mp4s, both with just the numerical name "12.mp4." One is in my Movies folder and one is in my iTunes folder, and I want to keep both and rename both. So I'd label the one in Movies "SoAndSo12.mp4" and then copy the "SoAndSo" (to avoid extra typing) and paste it into the name of the file in iTunes. I did this with at least 20 movie files in the past week. Then all of a sudden, I couldn't copy from a file name. The option is greyed-out. The only way I can do it is by opening "Get Info" and copying from the "Rename" section. This defeats the timesaving step; I'd rather just retype. But I've always been able to copy and paste file names before! This seems just crazy. Even the option to cut is greyed-out. I feel like something must be amiss. Can anyone help me out?
I've already just removed my com.apple.recentitems.plist, and I read some discussion topics here and I've tried removing the com.apple.finder.plist and com.apple.sidebarlists.plist from the User/Library/Preferences folder, and then I even tried removing the Preferences folder altogether, then I tried removing the Caches folder (restarted after these attempts) and no dice any time. I did notice, though, that there were simply new Preferences and Caches folders in there after I tried that, and I don't know how to avoid that.
Is there something else I could try? Thanks in advance.
MacBook Pro 2.33GHz Intel Core Duo Mac OS X (10.4.9)