Hi Hugo,
the first thing you should do, is download the 1.0-beta5 version which, besides adding new features, fixes quite some bugs.
Also, when posting for help, it actually helps people help you if you post your codeblocks version, your OS and your compiler. Generally, the more info you give, the most likely you 'll get a spot-on answer...
Greetings,
Yiannis.
PS: The message you 're getting, generally, means that a process was launched and returned with status code 1. I know it's not helpful but I can't say anything more with the little info you gave...