The same here. No idea what is going wrong.. sigh. i usually do not use a mysql password and run a couple of apps on my local server without password. now plogger asks me over and over again for a password. I looked up mysql and found one, but usingit does not help. i simply do not get it to run the setup process.
In the meantime i solved my installation problem: my mysql database does not require a password but Plogger kept me asking for one. I removed all password requests form _install.php and a DBPW request on line 7 in php_functions.php. Okay that made it.
I am surprised a database password is necessarily required as on my localhost i set up WAMP without a password for the database.
The purpose (obviously) is to force a database password for those that don't care or know better in production environments (i.e. "the real world"). The localhost testing laptop (my own situation, for mobility) or local server is a situation where it might be allowable to not have a database password, but as a convention we required Plogger to enforce password.
This problem is easily and better remedied by adding a password to the database, in my opinion.