First, stop the Service Catalog service if it's running. Now, edit the %USM_HOME%\view\conf\viewService.conf file and locate the lines which start:
(The numbers will increment by one for each line, so each additional parameter is unique)
Locate the last line and add this line after it:
where <nn> is the number from the line above, incremented by one.
i.e. If the lines are:
the line to be added is
Start the Service Catalog service, it will start cleanly with no errors and users will be able to log into to Service Catalog