Ok the solution to this problem is not the double-click, but the sharing of folders. VMware tools needs to be completely UN installed, restart the VM, then Install the VMware Tools again.
I also had to change the registry settings in Windows for VMWare tools first, because otherwise it could not be uninstalled.
The steps to modify the registry are in this thread, the reply from Zypher:
Modify the registry, then from Virtual Machine menu in Fusion, select Reinstall. This will cause the Tools CD to be mounted in the VM (Windows 8.1 in my case). Ignore the prompts that appear and instead open control panel and choose to Uninstall VMWare Tools. You will have to restart the VM afterwards. After restarting, again goto the Virtual Machine menu in Fusion and now select 'Install VMware Tools'. You will need to logoff the VM at the end and log back in again.