Trying to iniciate app, getting 500 internal error

[eluser]Rubiz'[/eluser]
Well.. I've installed XAMPP5 in my mac, and now I'm trying start my app dev, but I'm getting 500 internal error... When I installed CI I got the welcome message successfully, than I made:

config changes to http://localhost/app_name
route changes to default controller called main
and made main controller page and main view page.

What's wrong? anyone knows?

[eluser]Rubiz'[/eluser]
Well, I've descovered that the error was the .htaccess file in dir root.

I used it cause I dont want the index.php file appears in url adress... I used it as it shown in user guide; it seems I have to use it different way than it showed there... how it should be?

[eluser]Rubiz'[/eluser]
I saw right now this post http://ellislab.com/forums/viewthread/72432/ and I tried follow the steps, I use XAMPP, but I couldnt find the mode rewrite... anyone knows where is it?

[eluser]nirbhab[/eluser]
Hi,
Can't say about XAMPP for MAC, but in Windows and Linux versions of XAMPP, mod_rewrite is by default on.
According to your faced errors, your XAMPP has mod_rewrite as ON.
Coz you faced 500 internal error. that means your system have mod_rewrite as ON.

If you want to learn more about mod_rewrite....Refer httpd.conf file in your xampp directory. can't tell the exact location, as you are on MAC.

Have a nice day!

[eluser]Rubiz'[/eluser]
Thamns for replying Nirbhab, Mac system is same thing than Linux would be.
Well, if rewrite mode is on, I really dont know how could I make this htaccess to me... I started the app with .index.php, and it seams it will continue like that...