Could not write value Installed to key.
The error message below occurs during installation if the user installing does not have adequate permissions.
Run REGEDIT (if you cannot run this, you will need to log in as administrator to complete).
Right Click on Forecast 5 Ltd and select Permissions:
Highlight your user name:
You will note that the permissions are not set to full - tick "Full Control" and click Apply/OK.
Alternatively, the recommended fix is to click the ADD button and add the user "Everyone", click "Check Names":
Click on OK
Then tick Full Control
Click Apply, then OK and close the registry editor.
Forecast 5 should now install correctly - run the installer again.
If this does not fix this issue please contact firstname.lastname@example.org for further assistance.