Boxcryptor consistently dies or shuts itself down after running for ca. 3-5 days on a Windows 10 machine. This has been happening for 1-2 months I think. Both app and OS are up to date. It is encrypting two locations, Box and Skydrive Pro. (On another Windows 10 machine this doesn't happen.)
I'll second this, but I think it's been going on for a bit longer, maybe the past 3 or 4 versions.
I have it running on macOS and 5 Windows 10 PCs, all kept current. Without exception, it dies after a few days on Win10.