The software/plugin is not compatible with Windows 10. Here is what is says on the official website regarding the compatibility and system requirements:
OS: WINDOWS 98 SE, NT 4.0 (Service Pack 6a), 2000, ME, XP Home, XP Professional, Vista
Supported versions: ADOBE PHOTOSHOP 5.0, 5.5, 6.0, 7.0, CS, CS2 or CS3 (may also work with other plug-in compatible applications); ADOBE PHOTOSHOP Elements 1.0, 2.0, 3.0 or 4.0; ADOBE PhotoDeluxe Home Edition 4.0, ADOBE PHOTOSHOP LE 5.0; JASC Paint Shop Pro 7 or 8
As you can see, there is no Windows 10 mentioned anywhere. This is an old product that didn't receive any updates.
Official website: http://www.asf.com/products/plugins/gempro/pluginGEMPRO/