Dear Alain,
I have created a small web app with ABMaterial.
When the server is run through B4J everything is OK (see pic1).
When the server is run by executing the .jar file, greek fonts, in some cases, appear as questionmarks (see pic2).
The problem seems to be limited only in labels, buttons, comboboxes and radiogroups - but not always (for example, some labels, comboboxes etc in certain pages appear OK and some, in other pages, appear as questionmarks).
Also the behavior changes: for example, the radiogroups on pic2 are inactive. As soon as they become active, they greek fonts are displayed OK.
I have also experimented with different charsets (ISO-8859-7, Windows-1253 and UTF-8) with no success.
The example shown is using UTF-8.
Thank you in advance for any help.