Concrete5 install problem "Unable to connect to database."

I used the one click install for Concrete5 at my site

I filled out
Name Your Site: All One Place
MySQL Username alloneplacenet3
MySQL Password
Database Name alloneplace_net_3 (I pasted the wroing value here in the forum post at first.)

This produces “Unable to connect to database.”

On the left there’s a yellow triangular warning sign following

Testing Optional Items
Version Comparison Available

The error message is “You must chmod 755 concrete/libraries/3rdparty/ and disable PHP safe mode.”

I ran Filezilla and the permissions on the directory are 755. I read somewhere in the forums that PHP is in safe mode already.

I’ve seen several posts in the forums about this error message but I haven’t seen the solution to the problem in any of them.

Im having this same issue… Did you find a solution?