hp-toolbox not working as user

[bitpicker]

I've got an HP PSC 1510 all-in-one printer and use it with hplip. I don't often use hp-toolbox, but yesterday, when trying to help someone on another forum, I found that hp-toolbox does no longer work when I start it as user, but it does work when I start it as root. Scanner and printer do work for a user, only hp-toolbox doesn't get started. If started from a command line the following errors appear:

[xmit]

Same here. So filed a bugreport: https://bugs.gentoo.org/show_bug.cgi?id=157768
Lets wait and see...