IIS logs by default don't cover all the items needed for this app. If you go into your IIS instance and adjust the fields logged to include:
Fields:
date
time
s-sitename
s-computername
s-ip
cs-method
cs-uri-stem
cs-uri-query
s-port
cs-username
c-ip
cs-version
cs(User-Agent)
cs(Cookie)
cs(Referer)
cs-host
sc-status
sc-substatus
sc-win32-status
sc-bytes
cs-bytes
time-taken
... View more