Reproduced with python 2.6.1-1ubuntu7 and HPLIP 3.9.2-3ubuntu2. As Graeme says, the entire output of "hp-check -r" is the same error message is "warning: CUPSEXT could not be loaded. Please check HPLIP installation."
A bit of searching turned up this page, which describes a similar problem when HPLIP was moving from python 2.4 to 2.5 (scroll down to the section entitled "Fixing the hplip package"): http://www.nslu2-linux.org/wiki/HowTo/UnslungScanWithHPLIP
I can confirm that changing PyUnicodeUCS2 to PyUnicodeUCS4 as that page suggests does allow the hp-* programs to run.
Reproduced with python 2.6.1-1ubuntu7 and HPLIP 3.9.2-3ubuntu2. As Graeme says, the entire output of "hp-check -r" is the same error message is "warning: CUPSEXT could not be loaded. Please check HPLIP installation."
A bit of searching turned up this page, which describes a similar problem when HPLIP was moving from python 2.4 to 2.5 (scroll down to the section entitled "Fixing the hplip package"): www.nslu2- linux.org/ wiki/HowTo/ UnslungScanWith HPLIP
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I can confirm that changing PyUnicodeUCS2 to PyUnicodeUCS4 as that page suggests does allow the hp-* programs to run.