Soft white-ish sandwich bread

http://www.thefreshloaf.com/node/3149/soft-white-ish-sandwich-bread

I tried this recipe for our bread during the week and had a hard time with it crubling later on.  After eating a sandwich I would have a lap covered in crumbs!  The taste is alright, and the texture stayed pretty soft (minus the crumbs!) so it's something I would like to continue to try. 

The change that I made was I used half all purpose flour and half whole wheat flour instead of bread flour.  I'm sure I broke a huge baking rule there, but perhaps that is the reason why my bread ended up the way that it did.  Perhaps next time I should just button down and go get the bread flour.

Again, I have pictures but I can't upload them right now.