Yesterday I was using Vegas Pro 14 Edit and whenever I tried to save, it gave me an error something along the lines of not being able to find my license. (I do have a valid license, and have been using Vegas on a project for the last month or so with no issues.) I searched the exact message it was giving me online and the recommended solution was to delete Vegas, remove the associated registry keys, and reinstall.

Now I'm trying to reinstall (using VEGAS_Pro_14_Edit_DLM_Etailer_Connect.exe) and I'm getting the following error message:

MAGIX Installation manager

An error had occurred during communication.
Please check your internet connection.
...

My internet connection is just fine, of course. I looked online again and the suggested solution involves turning off virus protection and firewalls, which I've tried. I use Avira for virus protection (which I disabled completely) and Windows Defender Firewall (which I disabled for both public and private networks).

I still get this error message when I try to run the installation manager. Please help.

(If it helps, I'm using Windows 10 and I purchased Vegas through the Humble Bundle.)