appimage unable to authenticate to flickr on Ubuntu Xenial - cannot find kioslave

[jon piesing]

When I try to authenticate to flickr using DK 5.6.0 appimage (digikam-5.6.0-01-x86-64.appimage), I get an error - the same as printed on the console below ...

kipi.plugins: Frob is "72157683051607403-9b759a941cdbf46c-536726"
kipi.plugins: GetFrob finished
kipi.plugins: Authenticate url:  QUrl("https://www.flickr.com/services/auth/?api_key=49d585bafa0758cb5c58ab67198bf632&frob=72157683051607403-9b759a941cdbf46c-536726&perms=write&api_sig=caf7596602d8067dd46c14c97c4ce8ea")
kf5.kio.core: couldn't create slave: "Can not find 'kioslave' executable at '/usr/bin, /usr/bin/libexec, ././/lib64/libexec/kf5'"
kf5.kio.widgets: KRun(0xbaad90) ERROR (stat): 173   "Unable to create io-slave. Can not find 'kioslave' executable at '/usr/bin, /usr/bin/libexec, ././/lib64/libexec/kf5'"


Essentially the same thing happens with the snapshot of the 5.7.0 development appimage as downloaded yesterday.

kipi.plugins: Frob is "72157685783668196-d32c6812ffc75d1c-536726"
kipi.plugins: GetFrob finished
kipi.plugins: Authenticate url:  QUrl("https://www.flickr.com/services/auth/?api_key=49d585bafa0758cb5c58ab67198bf632&frob=72157685783668196-d32c6812ffc75d1c-536726&perms=write&api_sig=9c07545a37e5e44c1cc6f9113af1303f")
kf5.kio.core: couldn't create slave: "Can not find 'kioslave' executable at '/usr/bin, /usr/bin/libexec, ././/lib64/libexec/kf5'"
kf5.kio.widgets: KRun(0x2088a50) ERROR (stat): 173   "Unable to create io-slave. Can not find 'kioslave' executable at '/usr/bin, /usr/bin/libexec, ././/lib64/libexec/kf5'"
kipi.plugins: User didn't proceed with getToken Authorization, cannot proceed further, aborting
kipi.plugins: Group name is :  "FlickrExport Settings"
kipi.plugins: Not writing entry of group  "FlickrExport Settings"


Is this a known problem?

It may not work anyway due to https://bugs.kde.org/show_bug.cgi?id=381664 but I can't even get that far.

Thanks

Jon