I was recently testing out VMWare SRM, and when I tried to install the SRM plugin for the Virtual Infrastructure client on my Windows XP machine, I got an error ’1155′. It went something along the lines of ‘instmsi30.exe not found’ and referenced my local temporary directory.

After a little headscratching, I discovered (as I’d suspected) that this was nothing to do with VMWare or the SRM plugin. Updating my Windows Installer using the package on the Microsoft site here, allowed me to continue with the plugin install.