Improve error message.
tree8b8a0fd6f6bc00ed08d3a494e54601b0114981e3
-rw-r--r-- 35147 COPYING
-rw-r--r-- 4903 Makefile
-rw-r--r-- 10 VERSION
drwxr-xr-x - bin
drwxr-xr-x - debian
drwxr-xr-x - docs
drwxr-xr-x - etc
drwxr-xr-x - hooks
drwxr-xr-x - local
drwxr-xr-x - manpages
drwxr-xr-x - scripts