Unable to create/use Java 1.3.1 library in JDev 10.1.2.1 and 10.1.3 EA

Hi !
I'm working on a project that uses jdk1.3.1_03.
I use Jdev 10.1.2 and want to migrate to either JDev 10.1.2.1 (latest production version) or 10.1.3 EA (Early Access).
With JDev 10.1.2, I have no issue.
However, with JDev 10.1.2.1 or 10.1.3 EA, i have an error message as soon as I try to create/use a J2SE 1.3.1_03 definition :
Title : Java Virtual Machine Launcher
Error message : Could not find main class. Program will exit!
Is there a workaround ?
Is J2SE 1.3.1 no longer supported ?
If it is no longer supported, why did this happen between 2 minor versions of JDev (10.1.2 and 10.1.2.1)
Thank you in advance for your answers !
Thomas

I don't use JDK 1.3.1 to start JDev.
I know/use two ways to create the 1.3.1 library :
- Project Properties
then in the tree view : Profiles/Development/Libraries and then 'new' button
- Menu 'Tools/Manage Libraries'
then 'J2SE Definition' Tab and 'new' button
Both methods end with the error mentioned before when I select the 1.3.1 java executable after a click on 'browse' in JDev 10.1.2.1 and 10.1.3 EA.
As i wrote, the same actions in JDev 10.1.2 work perfectly.
Thomas

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