Trying to Create JNLP

I am trying to create a .jnlp for an old web application called UPSLT. It only runs on IE. I have uploaded UPSLTtest-ric.jnlp as a .txt file.
I am using the command-line javaws.exe -jnlp upsltest-ric.jnlp.

Fatal: Read Error: Could not read or parse the JNLP file at 'file:/C:/Program%20Files%20(x86)/OpenWebStart/upslttest-ric.jnlp'.

[UPSLTtest-Ric.txt](https://github.com/AdoptOpenJDK/IcedTea-Web/files/7927929/UPSLTtest-Ric.txt)
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Start by reviewing the attached UPSLTtest-Ric.txt JNLP file and the reported javaws.exe -jnlp command. Reproduce the parse failure with the referenced file, then document the cause and a verified way for the application to launch.

Scritto dal modello di indicizzazione a partire dal testo della issue.