Have spent a couple of hours on this, to no avail. I bought CursorFX yesterday, have installed, un-installed, and re-installed multiple times, including with the purge .bat file mentioned in one thread, and absolutely nothing happens when I click Apply on my Windows 10 computer. Double-clicking on a cursor theme, which is associated with CursorFX, does absolutely nothing. I was going to open a ticket, but simple product support doesn't show up as an option for opening a ticket.