Thread:Project:Support desk/No Messages of my extension in Special:Allmessages/reply (2)

No, I have expressed myself unclear. The messages do also not appear on the wikipages of the extension. And I am sure that it is not due to incorrect use of the specialpage special:allmessages. It seems to me as if the registration fails under Ubuntu. But I can not explain why. MediaWiki (and the extensions) are mostly platform-independent, aren't they?.