After I collected the last nanosuit module, I purchased my final upgrade (heavy armor). I used it until the next couple check points or so then quit the game. When I came back, the final upgrade is locked again AND I no longer have the points to unlock it. The game took the upgrade back but kept the module points! Please don't tell me I have to start all over to get it. This is my third time through and I need heavy armor for supersoldier! Well, I don't need it, heh. Man, I feel like I'm gonna have to erase my save data and start over.