problem with pidgin-ppa

[Richard Laager]

The error is happening on removal. Specifically, it's happening because
the package post-removal script is trying to remove the Pidgin PPA key
and the key isn't installed. Tomorrow, I'll correct the pidgin-ppa
package to handle this condition. I really need to upload a new pidgin
package anyway.

That said, Knoppix is not Ubuntu. The PPA is for Ubuntu. Since you're
using Knoppix, you'll have to either get your package from Knoppix or
build from source.

Richard