KDE programs don't start (Bus Error)

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https://bbs.archlinux.org – So, I recently switched my system from 32-bit to 64-bit without reinstalling.  Everything seems fine, with one exception: KDE programs (...okay, so I've only tested Kate and K3B) don't start: they both give 'Bus Error'.I tested with a new user account, and they work, so I thought it must be some file in home directory.  I moved everything I thought might be relevant away and tested, and still got the error.  I moved _everything_ in my home directory away, and _still_ got the error.Strange.  It gets stranger.  I created a new user, 'test', (HowTos)