Same config(Xoops 2.1.13,IIS 5.1,MySQL 4.1.13, PHP 5.0.4). Same problem. Page goes blank during install at the point whr it should check database access. I already have " register_long_arrays = On " in php.ini. No tables are created.Does not even try to create Database when given a non-existent Database name. Just blank screen.
I also have the same config - mysql 4.1.13. I'm running on Apache. Again, no attempt to do anything to the database - just blank screen.