Sorry for a late reply there... I seem to have missed this thread! (O.o)
Ahm, you say you can't save your games for either of the Rebuild games? It might sound silly, but you are certain that you are logged into ArmorGames when playing them, right? And you are not switching computers, because this will affect your save games as well as they are localised on your computer. To be completely sure, check if your computer accepts the save game data from ArmorGames, ok?
Let me know if this is all in check or whether it still causes problems for you! =)