Could this be caused by file corruption as suggested? Download a hard drive tool from the manufacturers site and check them all. Windows 10 is also known to cause no end of problems. Two thirds of windows users have stayed with Win 7 which has to tell you something. All versions of Daz have been rock solid for me The only problem I've ever had was quickly fixed by rescanning my content files with the CMS. I suggest you open a support ticket over at Daz and ask in the forums there. There are a lot more Daz users there than here.