I'm also probably testing this wrong, but instead of the error you provided, I got this error:
"
Failed to open device
Global symbol "$kdekdehtmldir" requires explicit package name at /usr/bin/khc_docbookdig.pl line 94.
Execution of /usr/bin/khc_docbookdig.pl aborted due to compilation errors.
"
I'm testing this in edgy as well.
I'm also probably testing this wrong, but instead of the error you provided, I got this error:
" khc_docbookdig. pl line 94. khc_docbookdig. pl aborted due to compilation errors.
Failed to open device
Global symbol "$kdekdehtmldir" requires explicit package name at /usr/bin/
Execution of /usr/bin/
"