Hey,
These are some wamp problems. Turn error reporting for the php scripts.
Thes arent real errors but just notices.
Some variables are emtpy but this is normal because they are not used. I will try to fix this in the next version.
I found a post in a forum which says how to turn it of.
http://www.wampserver.com/phorum/read.php?2,70609,70700