Did I screw up here?

I was trying to install a photo gallery program onto the subdomain photos.stonegauge.com – which was in my main directory on Dreamhost. I thought that the subdomain was active and I found out it wasn’t after I had uploaded the files to that sub domain.

So I created the sub-domain photos.stonegauge.com in the user panel and that sub-domain is now active but when I try to run the installation file to the program I upload – I get a nice juicy DNS Error. I also get a DNS error if I try to go photos.stonegauge.com

Did the fact I uploaded the files to the directory before I had activeted it as web space cause this problem? Should I just wait it out and, if things don’t work out, delete the files and sub-domain and start over again?

Advice needed. Thanks