I went to login to my favorite server today, but I was greeted with a mysterious connection issue, an "Outdated Server" error when I tried joining. I found out it was because my client had updated to 1.7.7
It's easy to revert to 1.7.4 so that you can still connect with Noobscraft.
In the minecraft launcher, click edit profile in the bottom left. then near the bottom, above java settings, Click the pulldown beside "Use Version" and select release 1.7.4.
Save profile.
Click play.
Enjoy Noobscraft!
Hope this helps anyone who had some head scratching moments.