for me the multi select is acting buggy, it seems to be only with images but i could be wrong, but with multi select activated, on entering a folder i find 10 or so files selected, i can replroduce it by just moving out of the folder and back in again, not always the same files or same amount of files.
compression seems to be working ok but i havent tested large files, will zip and rar come later?
anyway great update dude