Files with one or more "#" in their names before the ".bkmslf" are the originals from files which were at one time found to be corrupt, fixed and re-saved as new files.  The new, un-corrupt file, without the "#", replaces the old file.

Look at the modification dates of these "#" files.  If they were modified a long time ago, you may discard them, and this is recommended, to reduce confusion.

Regarding not being able to attach images to the forum, I'll check that out.