I have installed HPLIP 1.6.7. Printing works fine, but i have troubles with scanning. If I try start HPLIP with start script, it looks fine:
Starting hplip: hpiod... [DONE]
Starting hplip: hpssd... [DONE]

But if i try 'ps aux' is see that:
#ps aux | grep hp
root 1696 0.0 0.3 4848 1016 ? Ss 22:17 0:00 ./hpiod
aectann 1736 0.0 0.2 3876 752 pts/4 S+ 22:19 0:00 grep hp

It's mean hpssd didn't start.
If I try start hpssd manually, I see this:

#cd /usr/share/hplip
#./hpssd.py -g (debug mode)

.... (Information about hplip, it is not important :))

hpssd[1748]: debug: Exception: 95 (Unable to bind to socket)
error: Server exited with error: Unable to bind to socket

... and hpssd doesn't start :(

What can I do to make it working?

Aectann