When trying to download a Clicker Set file from Dropbox's website onto your Mac, the file downloads and opens as a text file containing code.

The problem is caused by Apple's Safari web browser.

When Safari downloads a file it doesn't recognize, it guesses what the file contains and adds another file extension to the end of the filename.

To resolve the problem:

1. In Finder, open your Downloads folder.
2. Select the file and press the Enter key.
3. Delete .txt from the end of the filename and then press Enter again.

The file should now open in Clicker 7 when double-clicked.

To avoid this problem in future, access Dropbox's website using a different web browser (e.g. Google Chrome).

Alternatively, download and install the Dropbox app from their website. This will create a copy of your Dropbox folder on your Mac that synchronizes automatically.