Hi Basj,
Thanks for getting back to me, much appreciated.
Carried out your instructions using the latest 1.3 version: Uninstalled Start11, then immediately rebooted. I then downloaded the latest version from Stardock's website. Unfortunately, after reinstalling Start11 it didn't work and I still couldn't move the taskbar icons.
Tried again, but this time did an extensive deep uninstall of Start11 using Revo Uninstaller Pro, rebooted then reinstalled with the latest version. Again, no joy with the icons again refusing to budge.
Then I discovered the cause of the issue:
Under "Change start button look and position" -> "Use a custom start button image". If this is set to 'ON' it won't let you move the taskbar icons. However, setting it to 'OFF' fixes the issue, and allow you to move the taskbar icons.
It looks to be a program 'bug' and means I cannot change or use a start button image of my choice and have to use the default version instead.
Do you have a suggestion for a workaround on this issue?
Many thanks
Frank