user must click all buttons before "next" appears?

Create a variable (for this example, I'll call your variable "Clicked").

On the first button, create the following action:

On: Click
Action: Modify Variable
Target: Clicked
Value: a
Modification Type: Add to Variable

On the second button, create the same action, but change the value to b. On the third button, same action, value = c, etc.

One the first button, create another action, as follows:

General tab:
On: Click
Action: Hide
Target: btn_none

 

Condition tab:
Variable: Clicked
Relationship: Contains
Value: abc

Paste this same action on each of the remaining buttons.

 

Create an action on the button that displays a message like "You can't continue until you've clicked all of the buttons on the page."

 

Then, change the action I gave you that showed the Next button so that, instead, it hides the Special Next button (or whatever you decide to call it).

 

Laura,

This is all great advice. But I'm running into an issue... I modified your suggestions to my project and posted them above.

When I click thru the pop-ups, I don't get a next button until i click one of them a second time.

Example: I click a, b, c, I get no next button until I click a or b again.

Thanks for any clues you can provide.

Steve

Edit:

I finally figured it out... I added conditions that used all combinations of abc. (ie. abc, acb, cab... etc)

I placed the conditions on each hotspot Hide action that I used.