Comment 20 for bug 414689

I chowned /dev/bus/usb as you said, and tried printing via hp-print - no success.
Here's the output:
(5406) findLibraryInternal: plugins should not have a 'lib' prefix: "libkfilemodule.so"
(5406) KPluginLoader::load: The plugin "libkfilemodule" doesn't contain a kde_plugin_verification_data structure
Thank you for all your efforts to help us!
Martin