problem re-installing Adobe Acrobat XI Standard

After a computer crash I'm trying to re-install Adobe Acrobat XI Standard (11.0.07).  Several times today I've gotten the error message "Setup Interrupted.  The wizard was interrupted before Adobe Acrobat XI Standard (11.0.07) could be completely installed.  Your system has not been modified.  To complete installation at another time, please run setup again."  Am I doing something wrong, or is there a problem with the particular Adobe web site?