I get the following:
[ 304911] WARN - ewvfs.persistent.RefreshWorker - fs=LocalFileSystem dir=file:///home/rev name=C:\nppdf32Log\debuglog.txt
It looks like the file has been created and we were unable to get its attributes.
But the file itself is just one of files FireFox uses/create and we do not point it derectly, we are tracking all changes in your home.
So, I doubt you can change this.