Installation step 3.

I have a problem with installation.

I haven't step 3. company, it's http error 500.
I can't create company.

Please help Me!

I had this problem happen when the first time I ran the installer it created all the DB tables but then later failed due to PHP version checking code that was just.... wrong (comparing strings vs ints). Once I fixed the installer script it still wouldn't go past step 3 until I deleted all the tables from the DB and started fresh.