[Gramps-users] Copy for Other Gramps Users

[<pet...@ne...>]

   I have tried to duplicate my Gramps file and media on a relative's computer who also has loaded Gramps.  I have tried exporting using .gpkg and .gramps, even trying Backup.  I constantly get messages saying the other person's computer has failed to accept my copy when I try to Import it.  I assume this is because the original file has me as the owner.  I try to give permission to all, but that does not work, as the copy when opened in the second machine does not permit write beyond group. 
        What am I doing wrong?  Any help appreciated.