Got back on trying to figure this out.
Did some testing and found out that if the WA_Include was in a folder outside the folder of the file it is in eg WA_Include("../folder/folder/filename.php"); it doesn't work ie. I get the Framework.php error "Framework file not found: folder/folder/filename.php" ... but ... if the WA_include folder is in the same folder of the file it is in it works eg. WA_Include("filename.php");. This only happens in XAMPP newest versions.
I believe I have the latest framework.php file - copy attached.
I'm now guessing that framework.php needs some revision to accommodate newer versions of XAMPP. What do ya think?
PS I also created a version of my file within the XAMPP test environment where the WA_Include was pointing directly to the file in my case on my C: drive and got the same results ie. works if file in same folder but not if it is in a different folder.