disappearing form controls

This afternoon I was working on a worksheet that had numerous form controls on it. I come back 5 hours later and all these controls are gone, plus a place where an embedded picture goes. The other worksheets still have their controls. Just this main sheet. Nobody else was on the computer during this time.

Needless to say, it's gonna be hard getting these controls set back up.

Is there a setting in Excel 2010 that hides these controls?

Try Alt+F10

That brought up the shapes that I created. Not the FORM Controls