While running the Extradium installer, you might encounter a rather cryptic 2869 installation error, as shown in the screenshot below:

2869 Error.png

If so, make sure the User Account Control setting (available in the Control Panel) on the SharePoint server where you install Extradium is set to "Never notify", as shown below:


After you've changed this setting, don't forget to reboot your server before installing Extradium, as officially recommended by Microsoft (cf. http://technet.microsoft.com/en-us/library/cc709691(WS.10).aspx#BKMK_S3 ).

Note: this is a requirement listed on page 4 of the Extradium 2010 Quick Start Guide.