Thanks for your reply.
I did add in fact Games and Types before I added a map.

I am not that n00b.

However, it didn't work and kept giving me this error. The only way to get rid of it, was to disable the requirement to add a Gametype. In that case I can only hope people will see the point in adding the Gametype to a map as well.
But now it actually worked, without that. Weird, but I am not good enough with PHP to find the issue or why it would happen to me.
Could you maybe give me an example about additional fields, like you have on
Novahq.net ? The Submit form there has much more options. But I suppose that requires a good knowledge of
PHP and
MySQL, which are both not my good fortunes.
And the really most important for me would be, any way possible, to mass-add a couple hundred maps incl. Screenshot in just a few steps. Or it will take me a long time to add all those maps afterwards.
Anything you can help me with is appreciated.
Thank you.
Wolfseye