I'm not sure where to post this as it affects Windows and Mac versions of 1.0.0, and it's also been previously discussed in the feature requests forum:
viewtopic.php?f=7&t=23991&start=15
But I'll explain it here since it probably will get the most comments.
Version 1.0.0 seems to have broken the timecode variable for using while formatting the snapshot string. That is, the variable $T.
In the Mac OS X version, it tries to save the timecode with colons in it, which the OS converts to slashes in the file name. And in the Windows version, it just wigs out totally when you try to use $T. That is, it does not make a snapshot at all.
So, in Mac, if you set the prefix to, say, AMovieqq$Tqq, with sequential numbers and JPEG format, it tries to create
AMovieqq00:03:01qq00003.jpg
but it winds up like
AMovieqq00/03/01qq00003.jpg
As I recall, this was pretty easy to fix previously.
Thanks!