[horde] pear: invalid or missing package file

[Andreas Mauser]

Hi,

as I got an error with pear/horde I read on the net but only found that 
the channel first has to be sidcovered.

I get this error.

root at server:~ # pear channel-discover pear.horde.org
Channel "pear.horde.org" is already initialized

root at server:~ # pear install horde/horde_role
No releases available for package "pear.horde.org/horde_role"
Cannot initialize 'channel://pear.horde.org/horde_role', invalid or 
missing package file
Package "channel://pear.horde.org/horde_role" is not valid
install failed

Someone had this already?

Kind regards,
Andreas