Unable to save project

Anyone else having trouble saving. I'm getting the "oops" message again, and autosave keeps failing. Homestyler say my design is too big, but it's one floor with no finish and hardly any furniture, so I don't understand that, especially given some of the designs I see on here. Anyone else having issues, or know how to fix this? Tried in various locations and on different machines, so it's not internet or computer related.