Your comments

Hi Truman,
This was a bug that is now fixed. The technique that Alin describes is more straight-forward, but if you do need a conditional behavior to react to a change in the value of a counter, this is working again now :)
You're welcome! If you want to make a "next" button appear once everything has been placed, add a counter to the page, and add a point to the counter each time a correct intersection occurs (using the CounterAdd behavior for each intersection). To the "next" button, add the following action set:
Interaction: (none)
Behavior: Show (or FadeIn or Animate onto the screen, etc.)
Target: (Self)
Condition: {Page Counter} Is {Value}
Element: the counter that you added
Value: the number of elements that need to be placed to complete the activity

Let me know if you'd like to see an example app of this effect!
Hi Steven,
We have a quick tutorial video about putting together the drag and drop effect here: Hat Tutorial: the "Snap into Place" Effect.

To check out the app from the video in InteractBuilder, you can download the app folder here: Drag and Drop.
Hi Ann,

So when you click the app from this "Your apps" screen of interactplayer.com, it goes to a different page from the page that you wanted to view, is that correct? When you are in Design mode and you go to preview your app, which pages do you select?

Also, you mention that it only opens test apps created after the upgrade. Are there some apps that you have uploaded that are not showing on interactplayer.com
Thank you so much for saying that! And thank you for your notes here on the feedback forum. Your detailed feedback is really helpful and appreciated!
Hi, thank you! I've reported this problem to our lead developer.
Hi Sean,
At this point there isn't a tile option for page backgrounds. We will hopefully fix the gradient background problem soon as well as the problems with the lines. If you do want to have the background work right away, it's fine to create a background image as a jpg file. But if you want to reduce file space, you could also create rectangular strips that include the gradient and copy and paste them, placing them along the page behind the other elements. Each copy will refer back to the same file in the app folder.
Hi Sean,
We've recreated this problem in the Windows version and are working on fixing it so that Google fonts can be available in the font menu.
Thank you for your feedback!