How to save field settings???

I feel like there's some secret button I'm supposed to click to get Creator to save form field settings. I'll set something in the field, like the name of the field. Then a little yellow box appears that says "Saving Changes...". Then, when I go back to the edit the form, none of the changes are there. Sometimes I've given up and just let a field be called "Single Line" because I can't get Creator to save anything.

Here's an example. Here's a screen shot of Creator saying it's saving changes to a field. Notice that it says it's "Saving Changes..."

Here's a screenshot after I came back to that form:

All. the field settings are gone.

Does "Saving Changes..." mean something besides, y'know, saving changes? Is there another button somewhere that says "Actually save changes"?

(OK, yes, I'm a bit snarky in this post. This sort of problem really bugs me.)