It looks like I was able to fix it.
I deleted the following files from the system's library:
/[user]/Library/Application Support/Adobe/Dreamweaver [version number] (folder)
/[user]/Library/Preferences/Adobe Dreamweaver [version number].txt (file)
When Dreamweaver launches, it creates a new preferences file and folder.
Did it ever run on Sierra?
Technically, CS5 isn't tested or certified to run on Sierra.
Yes, it was running fine on Sierra before the update to 10.12.1. The problem has been solved, please see my update below my original question. Thanks.
Is there another possible solution? I have tried this and it is still not working.
I have this problem few times in the year, and this is my solution:
- Uniinstal DW, very important is to check "delete all preferences"
- Install new DW
If you have problem with install any Adobe on MacOs just look at this video: Fix - Can't Install Photoshop CS5 on macOS Sierra (Also CS4 & CS6) - YouTube