[imp] Error during login

[G G Papazoglou]

Hi. I've been using CVS versions I get the
following when trying to login to IMP:

Notice: unserialize() [function.unserialize]: Argument is not an string in
/usr/local/apache2/htdocs/horde/imp/lib/Session.php on line 177

Warning: Cannot modify header information - headers already sent by (output started at
/usr/local/apache2/htdocs/horde/imp/lib/Session.php:177) in /usr/local/apache2/htdocs/horde/imp/redirect.php
on line 117

If I refresh the page continues to load normally.

Any ideas?

Thanks,
Greg