There is an upstream fix for the crash; it will be in the next gutenprint release. Alternatively you can get the patch here if you don't want to wait for upstream to spit out a new release:
Second, the permissions for the 'gutenprint52+usb' backend are incorrect, and I believe this is the fault of the Ubuntu package itself. They currently are 0755...
-rwxr-xr-x 1 root root 90788 Mar 18 18:36 gutenprint52+usb
But should be 0700. This is what the upstream gutenprint package installs:
-rwx------ 1 root root 102005 Mar 27 14:28 gutenprint52+usb
I am not able to make changes to the Ubuntu package, so this will have to suffice.
Still, the root cause is that libusb is basically broken on your system, but at least the crash won't occur any more.
There is an upstream fix for the crash; it will be in the next gutenprint release. Alternatively you can get the patch here if you don't want to wait for upstream to spit out a new release:
http:// gimp-print. cvs.sourceforge .net/viewvc/ gimp-print/ print/src/ cups/backend_ common. c?r1=1. 31&r2=1. 32&view= patch
Second, the permissions for the 'gutenprint52+usb' backend are incorrect, and I believe this is the fault of the Ubuntu package itself. They currently are 0755...
-rwxr-xr-x 1 root root 90788 Mar 18 18:36 gutenprint52+usb
But should be 0700. This is what the upstream gutenprint package installs:
-rwx------ 1 root root 102005 Mar 27 14:28 gutenprint52+usb
I am not able to make changes to the Ubuntu package, so this will have to suffice.
Still, the root cause is that libusb is basically broken on your system, but at least the crash won't occur any more.