Symptoms
You attempt to install Acronis Snap Deploy 6 on the machine where Acronis Snap Deploy 5 is installed. Upgrade installation fails with:
Preparation for installation has failed.
There are Acronis products that are incompatible with the one you are going to install. Uninstall the following products first:
Cause
Acronis Snap Deploy 6 is provided as a 64-bit application by default. Acronis Snap Deploy 5 is a 32-bit application, so a direct upgrade to 64-bit version is not possible.
Solution
Either uninstall Acronis Snap Deploy 5 before installing the 64-bit version of Acronis Snap Deploy 6, or download a 32-bit version of Acronis Snap Deploy 6. See Acronis Snap Deploy 6: how to install upgrade for details.