The error that you are getting is:
Deployment and application do not have matching security zones

Someone ran into this error ten years ago, and they were able to fix this problem by changing their Internet Explorer security settings:
https://skyline.ms/announcements/home/support/thread.view?entityId=efafef40-94c4-1032-ae5f-da2025829168

When I Google "Deployment and application do not have matching security zones", some of the pages seem to make it sound like you could solve this problem by using a different web browser to download the file. Each web browser (Internet Explorer, Chrome, Firefox, etc) has a separate set of security settings, and if the settings in one browser are doing something to the Skyline zip file, using a different browser to download it might fix it.

I could imagine that this sort of error that could be caused by needing to "unblock" the .zip file that you downloaded before unzipping it.
That is, when you download a file using a web browser, Windows remembers that the file was downloaded from the internet. If you right-click on the file in Windows Explorer and choose "Properties", you can see at the bottom of the Properties dialog:

Security: This file came from another computer and might be blocked to help protect this computer.

There is a checkbox next to that message that says "Unblock".
If you uncheck that checkbox, Windows will no longer display that message with regards to that particular file.

If you use a program such as 7-zip to unzip the .zip file that you downloaded from the internet, this is generally not an issue, because when 7-zip unzips something it does not remember whether the original .zip file had been blocked.
But, if you use the Windows Explorer menu item "Extract All" to extract the files from the .zip file then it is important that the .zip file was unblocked before you did that. If you have already extracted files from the .zip file while it was still blocked, then I would recommend deleting all of the unzipped files because it is too difficult to go through every one of them and unblock them.

If "unblocking" the .zip file before extracting it does not fix this problem, and using a different browser does not fix it then I am not sure what the issue is.
If you Google "Deployment and application do not have matching security zones" you might find a page that will help you.
-- Nick

Hi Nick,

Thank you for the clear explanation.

I used Firefox to download the unplugged version as I have done in the past which is why I found the change weird.
 
Nevertheless, your suggestion of clicking the "Unblock" box worked. I was able to install Skyline-daily after this.

Thank you for resolving the issue.
Sincerely,
Juan C.