strategyonly
C2C Supreme Commander
are comments and not code I put in my buildinginfos to guide me. Xml programming language ignores them when applying the code.
In Notepad++ they show up green to me. I checked before uploading it and isn't get any errors when starting the game and everything showed up.
I have comments for Health, Happiness, Auto build, and Cost, others. I won't use comment tags ever again.
The formatting is in almost all the area you added are incorrect. see below for the main two mistakes

. I think I need to sit back, take a deep breath, update everything to/from SVN except your file and start again

Attached is my fixes to your buildings file I have not had chance to check it against your file.