Hello Jean-Yves,

I suppose you just updated your Ubuntu dist to 22.04 and have the following configuration:

Linux 5.15.0-47-generic
Java 11.0.16
OpenJDK Runtime Environment build 11.0.16+8-post-Ubuntu-0ubuntu122.04
OpenJDK 64-Bit Server VM build 11.0.16+8-post-Ubuntu-0ubuntu122.04, mixed mode, sharing

Scilab needs a Java 8 runtime. So, the first step should be to install OpenJDK8, however, you should use the official Scilab build (containing all dependencies, Java 8 runtime, ...) provided as a tar.gz archive:

wget https://www.scilab.org/download/6.1.1/scilab-6.1.1_x64.exe
tar xvf scilab-6.1.1_x64.exe
cd scilab-6.1.0


Le 14/09/2022 à 08:42, Jean-Yves Baudais a écrit :

I get the following message when I execute Scilab (in the shell window)

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.scilab.modules.jvm.LibraryPath (file:/usr/share/scilab/modules/jvm/jar/org.scilab.modules.jvm.jar) to method java.lang.ClassLoader.initLibraryPaths() WARNING: Please consider reporting this to the maintainers of org.scilab.modules.jvm.LibraryPath WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

And when I try to open the Edit/Preferences window I get the message (in the shell window)

ERROR:  'Impossible de compiler la feuille de style'

with a long message that finishes with

Caused by: java.lang.NullPointerException
    at org.scilab.modules.preferences.XCommonManager.generateViewDOM(Unknown Source)     at org.scilab.modules.preferences.XCommonManager.refreshDisplay(Unknown Source)     at org.scilab.modules.preferences.XConfigManager.displayAndWait(Unknown Source)     at org.scilab.modules.preferences.XConfigManager.openPreferences(Unknown Source)
    ... 43 more

and nothing appends, the Edit/Preferences window is not opened. (I don't know if there is a link between the WARNING message and the ERROR one!)

What can I do?


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Stéphane Mottelet
Ingénieur de recherche
EA 4297 Transformations Intégrées de la Matière Renouvelable
Département Génie des Procédés Industriels
Sorbonne Universités - Université de Technologie de Compiègne
CS 60319, 60203 Compiègne cedex
Tel : +33(0)344234688

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