I did a search on crashlog and that turns up 829 hits and some of those are programs, that obviously create some form of crashlog, perhaps you might find on that’s familliar.

Double file extensions like that always ring warning bells for me.

They do normally for me, but I have seen this one as a legitimate compression format on some download sites.

As I said rename would have been my first option, since that wouldn’t work, it doesn’t leave much else other than deletion. It is not a windows system file.

David