On my old laptop, I installed Portable.apps Platformer to "C:\Programs\Portable Apps". I then used it to install Firefox Portable and was able to successfully pin it to the Taskbar, no problem.
On my new laptop, I can install Portable.apps Platformer to the same location "C:\Programs\Portable Apps" and be able to pin Firefox Portable to the Taskbar, no problem. But the thing is, I want to install it to my USB Drive instead which is "G:\".
When I tried installing Portable.apps Platform to the following locations on my USB Drive, it would not let me pin Firefox Portable to the Taskbar:
"G:\010__Testing\Portable Apps" (that's two underscores, not one)
I am thinking that it has something to do with the fact that it is a USB Drive. To confirm this, I unplugged the USB Drive and plugged it into my old laptop and tried installing Portable.apps Platformer at the following location but it still would not let me pin Firefox Portable to the Taskbar:
The USB Flash Drive that I am using is a "SanDisk 64GB Ultra Fit USB 3.1 Flash Drive" (https://www.amazon.com/gp/product/B077VYCV37). I purchased it on April 15, 2020. I never had a reason to change anything in Properties, and I don't see anything there about Security or Permissions. I really don't know what to do at this point.