I have a Wix Bootstrapper Exe which internally invokes an MSI file. Can some one help me to ensure that only a single instance of Boostrapper will get installed and will be seen in ARP. I have seen that if i makes comes changes to Bundle.wxs, even though the version number and the Upgrade code are the same, it is able to install the second instance. ------------------------------------------------------------------------------ Try New Relic Now & We'll Send You this Cool Shirt New Relic is the only SaaS-based application performance monitoring service that delivers powerful full stack analytics. Optimize and monitor your browser, app, & servers with just a few lines of code. Try New Relic and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_may _______________________________________________ WiX-users mailing list WiX-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wix-users