No one ever replied to this, however I was able to find the answer on my own. For anyone else who runs into this problem, here is the answer:
If your managed bootstrapper application is complied for .Net 4.5, your BootstrapperCore.config needs to state the following: <startup> <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" /> </startup> -----Original Message----- From: Nick Miller [mailto:nmil...@livetechnology.com] Sent: Wednesday, April 24, 2013 2:08 AM To: General discussion for Windows Installer XML toolset. (wix-users@lists.sourceforge.net) Subject: [WiX-users] Trouble with DotNet Hi All, I am having a very annoying problem. I have a managed bootstrapper application which requires .Net 4.5. I have the proper PackageGroupRef in my bundle's chain, and it installs .Net 4.5 successfully when there is no .Net installed. The problem is that if .Net 4 is already installed I run into one of two problems: If in my BootstrapperCore.config I state: <supportedFramework version="v4.5" /> I get the following every time I run the installer no matter what: Loading prerequisite bootstrapper application because managed host could not be loaded, error: 0x80070490. ... The prerequisites were already installed. The bootstrapper application will not be reloaded to prevent an infinite loop. If I declare any previous versions for supported framework, the installer crashes, and never loads the prereq window. Any ideas? Nick ------------------------------------------------------------------------------ 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_apr _______________________________________________ WiX-users mailing list WiX-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wix-users ------------------------------------------------------------------------------ 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_apr _______________________________________________ WiX-users mailing list WiX-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wix-users