You get this error when attempting to generate a Windows Installer for your application using the Generate Deployment Installer command (Deploy, Generate Deployment Installer...) in Iron Speed Designer.
Target AspNetCompiler:
Error MSB3464: The TargetPath parameter must be specified if the target directory needs to be overwritten.

This error message appears if you do not have Microsoft Visual Studio .NET 2005 installed on your machine and you attempt to create a Windows Installer for your application through the Deploy, Generate Deployment Installer (MSI) command in Iron Speed Designer. Please note that while the deployment project can be created without installing Visual Studio .NET 2005 on your system, MSI generation requires Visual Studio .NET 2005 on your system.
Install Microsoft Visual Studio .NET 2005 on your machine or use the XCOPY Option to generate the deployment project.
Part VII: Troubleshooting Applications
Application Generation and Compilation Error Messages