Why do I get a

You have activated the BSCW Desktop Uploader program for file upload and did not install the program on your local PC. Deactivate BSCW Desktop using

  [Options > Preferences]  
  [ ] Use BSCW Desktop client for file upload   

Alternatively you may install and configure the BSCW Desktop Uploader  application.

Keywords: BSCW helper, upload, preferences