I'm just starting to mod and I've found that whenever I save a new plugin for the first time I get a crash and lose my data.
I've tried saving before editing, saving before loading data as detailed on Bethesda's modding page, but to no avail.
I have Shivering Isles and my CS is version 1.2.404. Reinstalling the program helped. I saved before loading data and then proceeded to save after editing something, but when I visited the mod in game, or likewise, when I reloaded the mod in CS it was gone.
Any thoughts on this?