Topic Title

Previously, if you installed an update then found it had a bug or two that made it unusable you could simply install an earlier update to overwrite the current one.

The newer updates require you to remove the previous update prior to an earlier update being installed.

a) How is this done?
b) Can all future updates be like the earlier one's where all that is required is to double click on the .exe update file and it installs and overwrites the current update, irrespective on whether it is a later or earlier version.