Although I was not involved in the original troubleshooting - I have a bit of a bone to pick -
You should know the difference between the different versions and the effects of those differences. Would instaling Filezilla make any difference. Are the components in Lite the same as in the full version.
I need to point out to you -
A. - this is FREE Open Source Software - by inference, it is primarily DIY. There is absolutely no structure beyond a few developers who bundle the software, and (only recently) a few Moderators who try to guide things along.
B. - XAMMP is a suite DISTRIBUTION - that means some of the issues may come from the components, or the OS, or environment, and not from XAMPP. Everytime a new release comes along, everyone has to start from scratch. New problems, new solutions. At the moment, we don't know the source of the issue in your case (obviously). Have you seen how many versions have been cranked out in the last year? Two of them were due to 'errors' made by other (major) parties. The XAMPP devs turned right around and rebundled. A LOT of work.
C. - All the folks who are answering your questions are VOLUNTEERS, who spend their valuable time trying to solve your issues. Most of us have 'jobs/responsibilities' that provide a living, and must be attended to. Consequently, there can be no 'accountability', beyond making a best effort to try to resolve the issue, or referring it to the developers. There is no training budget, or printed documentation - everything is done by knowledge, intuition and installation & testing. A LOT of that too...
You are also absolutely right - you have the CHOICE of what to run with Open Source software.
I - personally - think/guess that the problem lies in the 'Light' version issue.
Now that my mini-rant is over, I wish you good luck and hope that you will post the result.