Moving Hosting

HI

I am moving our site to another hosting, Godaddy, and they give me a space to test the site before make it online.

http://MyDomain.previewdns.com/

So what I did I changed all the paths in config.php but I still get this error:

“The system path does not appear to be set correctly. Please open your path.php file and correct the path.?

I also not able to access the /system folder anymore to change any pathes.

Can you please assist me with this.

Amir