Faulting application name: Couatl.exe, version: 3.2.0.4029
I last ran the FSDT Life update this morning (9/18) and still am seeing the error.
This is clearly the antivirus, since version 4029 is not the latest one, and it's not possible to get the old one (which is not online anymore) with Live Update, unless something is blocking the download.
I am using W10 Defender and have the folder D:\Users\Kevin\Documents\Prepar3D v4 Add-ons\Addon Manager\Couatl set as an exclusion area.
As clearly explained in all forum posts about the antivirus, we NEVER said to "exclude Couatl". We always said to exclude the WHOLE Addon Manager folder because, if you don't do that, you cannot possibly be sure the *UPDATER* itself won't be blocked from doing his job.
Be sure you also don't have other software that might block the download, like a firewall, an anti-spyware, etc.