because I think it only happens on the Mac version. Mark Bailey & I use Mac - who else?
If you're on Windows, then your csv file stays put.
Every time you import (on the mac via a process) it removes the file when done.
So when you're doing a bunch of testing over and over, you have to keep the file(s) open in a text editor, switch to that when it complains "file not found" (cause you forgot), save it, then switch back to browser and import again.
