I do not get this error on any machine where I run my webstart app, nor does anyone with the exception of one person who says they get the following error:
“An error occurred while launching/running the application.
Category: Launch File Error
The field <jnlp>codebase has an invalid value: https://www.whatever.com:8443/MyApp
First couple of lines in the JNLP file are:
<?xml version='1.0' encoding='UTF-8' ?>
I cannot reproduce this problem. Any idea what the problem might be? They have tried on 2 separate computers at the same site.