MS seem to have altered something in Windows 10, and this is affecting parts of the program which delete the task and also disable/enable the task when turning off both stats logging options.
If you run into these problems to work-a-round the issue run the GUI with elevated privileges (Right click - rus as administrator)
You can also edit the programs properties and on the compatibility tab tick the checkbox to "Run this program as an administrator", and then clip apply. Each time you run the program you will get a UAC window pop up though (there are ways around this without turning off UAC).
Note: This only so far seems to affect Windows 10, W7 & W8.1 and also Windows Home Server 2011 seem to work as they should.
I will try to pursue a proper fix in due course.