Hi:
Usually, these type of Workbook setting errors or Table errors or Style errors come about because you are not using the most updated version of the tagset template. It is possible that you have one version of the template item store on your local machine and a different version of the item store on the server.
When you use SAS/IntrNet, you can use the _debug parameter to return the SAS log for your examination. This may provide some clue as to which version of the tagset template is being used. In addition, with SAS/IntrNet, you can use the APPSRV_HEADER function to explicitly send the appropriate CONTENT-TYPE header for the file (when you use _webout).
It's hard to debug SAS/IntrNet issues on the forum, because what comes into play is not just the code that you've put into the Application Dispatcher library, but the URL that you're using to execute that code, etc, etc.
You may want to open a track with Tech Support on this issue.
cynthia