I can confirm there is an issue when starting the application, I tested it on both win 8.1 and win 10. Logs I found:
242.409: Heaps: 6
242.409: Failed to enable LFH for heap 1 Handle e8d0000 . Error 87
242.421: Loading plugins
242.435: Loading camera modules from “C:/Program Files/Corel/Corel AfterShot 3/supportfiles/cameras”
242.435: Loading camera modules from “F:/Cameras (64-bit)”
242.435: Bibble program arguments (“C:\Program Files\Corel\Corel AfterShot 3\build\AfterShot.exe”)
242.436: Problems clearing file %s : %s “F:/AfterShotPro.log” “The system cannot find the file specified.
F:/ is the directory I choose for the user space and defaoult picture directory.