Hi, I'm new to this forum and I'm not sure where to post this question. I'm trying to use Instacal on a Windows 10 laptop. I downloaded the mccdaq.exe file yesterday and ran the install. Windows now shows the Instacal icon in applications, but when I try to run it, Windows tries (shows busy) for about 5 seconds, and then quits and Instacal window never opens. Any ideas please? Thanks