I’ve got it figured, there is a WiX UtilExtension that has a CloseApplication custom action, this basically works the same as you previous had with NSIS, i.e. it find the target application and sends a WM_CLOSE message.
Also, as far as nightly builds go, i would think we could do this the same way the WiX team do with there weeklies, the WiX source can be authored with an Upgrade code and version number, so that it basically performs an upgrade (detects the previous msi version, run it to uninstall the previous and then installs the new version)
I’m still testing this out, but it appears to be working ok.
Something that I’ve not looked at at all is localisation 😕 I know that WiX can support this, but i think the number of languages currently supported by WiX is quite minimal…
Also, i don’t currently have any way of testing this
-Nic