Anyone successfully mining CPR with minerd? All I seem to get is "booooo" rejected shares, I really would like to find a working pool cpr.botpool.net accepts my shares from gpu but I don't see any coins in my account

Have you tried different configs for the command line? Try using http://127.0.0.1 instead of 127.0.0.1 A 404 error is file not found, also used on websites when a page is not available so there must be something wrong with the connection

Also just out of interest which coin are you mining?

Have you allowed the blockchain to download completely?

I had the exact same problem using minerd but it was fixed after I finished downloading the blockchain and restarting my computer. Also make sure you are using -server flag on the wallet short-cut, but you probably already know that.