It sounds like Qt did not get built properly or else moc.exe is not where the BitcoinQt project is expecting it to be. Any .h file that contains a Q_OBJECT declaration must be processed by the Qt moc tool and moc.exe is something that needs to be built when you build Qt. The BitcoinQt project expects it here:
"..\..\bitcoindeps\qt-everywhere-opensource-src-5.1.1\qtbase\bin\moc.exe" If this path does not exist, you will see that error. Congratulations on your progress so far!

The Qt plugin makes it easier to control or modify the location of the Qt but I didn't want to force people to install the plugin and the BitcoinQt project is not setup to use it which is why all paths are hardcoded in the project file. It's ugly, I know.
I may not have internet access for a few days so future replies may be delayed--sorry about this.