Cubase 5 does not save our Waves presets :(

We’ve been working almost 5 hours on a project in Cubase 5 using Waves Plug-inns. We saved each step we made. We went out for some food and went back into Cubase. Turn on our computer and guess what? Cubase didn’t save our goddamn presets :cry: now why is that??? Anybody out there with a solution? We did some tests, cubase ignores saving presets every time :cry: