I try with a pure debian sid 32 bits, with all libmtp installed and also mtp-tools. Nothing change always the same message : the process died abruptly.. I don't think it depends of a siduction distro.
But can you precise which repos are activated , with or without contrib and non-free for as far as i remember it seems to me that after dist-upgrade just after installation doing nothing else my kio-mtp works perfectly.
But i say again after complete dist-upgrade with ALL the repos (base,extra,user,fixes,kdenext) and non-free and contrib activated my kio-mtp does not work anymore. I'am practically sure it's not dependant on Konqueror or Dolphin.
I've tried Air Droid on Wifi : Excellent! So I'll continue with it but i would like to know why my mtp does not work. Grr...!!