I recently upgraded to 1.7.5 and seem to have lost a whole bunch of data.
All of my form fields are gone, and entries are mostly blank.
I've disabled all other plugins and made this video:
Try going to the gravity forms settings page and in the URL enter &setup and press return. See if that helps.
No luck. For the record I tried:
No dice. I tried the meta recovery tool on a few forms without any luck...