A little more detail please
I could use a little more specific's please...
Should I select the (file) field from the lsit of form fields. I'm afraid I haven't yet got the hang of when to use Server, Session or Form variables. So the options under the lightning bolt make my head spin.
You don't mention what if anything to have in the Rename to:
Using the settings show in the attached image, only the first save uses my photo_101 prefix. Subsequent saves resort back to the flename_increment. I was shooting for photo_101_1, photo_101_2.