Wierd behaviour in Konqueror rootmode

If I type:

kdesu 'konqueror --profile Myview'

I can then edit ie. XF86Config-4 and save it with kwrite through konqueror.

But when I try to do the exact same thing after closing konqueror I get this
error when I try to open XF86Config-4

KDEInit could not launch 'kwrite'


For some reason it only works correct the first time, the second time I get
this error...is it a bug?