The installer should have come with those? Hhhmmm..... Ok, a tad bit dated, but, have a look http://wryemusings.com/Wrye+Bash.html#Installation.
Well, got Wrye Bash installed. Now, I know for a fact it's no longer a master file and is for certainty an ESP thanks to that. But, I'm still coming up with the same error. I try to save the mod, but it says it can't cause it's a 'master file or is in use'. However, I don't have Oblivion open, just the Construction Set thing, and I'm trying to save my work on it.