As suggested, I shall open a new thread to track this issue.
I have multiple apps/utilities that were categorized into folders, under PoratableApps.com folder I just put directory symlinks to the real directories.
Because the real directories were categorized into folders, sometimes its paths were a bit long. I managed it somehow.
However, whenever the absolute path length is greater than 260 characters, the app can not be opened from the PortableApps.com Platform.
As @John said in the above link, quote: "Most apps won't work with paths that long" I have a second thought on that. As Windows started to support long path more than a decade ago, more and more apps support long path if the developers aware of it. Eventually, I think this will become standard or at least more common, just as when we moving from 32bit to 64bit.