Gutenprint has bugs

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http://askubuntu.com – My printer canonMP550 doesn´t work with i7 x86 64bit under ubuntu11.10 with cups+Gutenprint2.5.7 What i found, is: in gutenprint it is translated into ip4000 only, but it belongs to the group ip4700, which is translated into ip4300(parameter). I tried to correct, read only, shit what to do? Next is gutenprint uses cups 1.2, but installed is cups 1.5 , so instead system/library/ color sync/ ..... it is usr/share/color/icc/sRGB.icc . So this seem to be real bugs, but i am new and need help to correct this staff! (HowTos)