This article only applies to Squared Up Version 2.0. If you're looking for help with Squared Up Version 3.0, please visit our new knowledge base
Reasons for installation failures
IIS has no 'Default Web Site'
Squared Up creates a virtual directory under the Default Web Site. If your IIS installation does not have the Default Web Site configured, then a website name must be specified on the command line. See Install to a website other than 'Default Web Site'.