There are times in which a file lock prevents the Installer from copying and accessing files that it needs as manifested with the following error.
2014-06-05 11:06:52,323 WARN  Apprenda.SaaSGrid.Deployment.EventLogger-Configuring IIS - An error occurred while cleaning up the temporary directory C:\ApprendaPlatform\BootstrapIIS. Access to the path 'antlr.runtime.dll' is denied. 2014-06-05 11:07:16,702 ERROR  Apprenda.SaaSGrid.Deployment.EventLogger-Configuring IIS - Program - An unexpected error occurred while bootstrapping the websites on APPRENDA-01: The type initializer for 'InstanceHolder' threw an exception. === Surface Exception === Type: System.TypeInitializationException Message: The type initializer for 'InstanceHolder' threw an exception. at WebsiteCreationTool.SiteConfiguration.get_Current() at WebsiteCreationTool.Program.Main(String args) === End Surface Exception === === Deepest Exception === Type: System.ApplicationException Message: Unable to run the tool because no configuration file was found after 30 seconds. Please make sure that the file 'SiteConfiguration.xml' exists in the root of the execution directory. at WebsiteCreationTool.SiteConfiguration.InstanceHolder.LoadInstance() at WebsiteCreationTool.SiteConfiguration.InstanceHolder..cctor() === End Deepest Exception ===
In order to get around this issue, simply restart the Installer to clear up any file locks that exist in the system.
Yes, restarting the installer cleared up the file locks.