[quote="leo"][quote="IanLS"]I have had the same issue since upgrading to Windows 10 Pro 64 bit.
I will try a clean install and see if that solves the issues I am having.
We recommend trying the things in the FAQ linked in the first reply.[/quote]
Hi Leo, I have some more information that may help sort out the problem. The problem may be related to the Windows USB 3 driver (the disk which usually causes the problem is an SSD in USB 3 enclosure) or it could be related to the new build of Acronis ATI 2015 which was released in late July. Of course, it could be a combination of both. Mounting ATI 2016 disk images does not cause any problems (they are on internal HDD).
I will investigate further and get back to you.