But it will scare friendly ones, which will want to keep their values stable.

Yes. If an AI is Friendly at one stage, then it is Friendly at every subsequent stage. This doesn't help make almost-Friendly AIs become genuinely Friendly, though.

It takes stupidity to misinterpret friendlienss.

Yes, but that's stupidity on the part of the human programmer, and/or on the part of the seed AI if we ask it for advice. The superintelligence didn't write its own utility function; the superintelligence may well understand Friendliness perfectly, but that doesn't matter if it hasn't been programmed to rewrite its source code to reflect its best understanding of 'Friendliness'. The seed is not the superintelligence. See: http://lesswrong.com/lw/igf/the_genie_knows_but_doesnt_care/