Do you get a message when trying to launch Houdini asking if you want to “install” (seems like a poor choice of words, but oh well) a free, non-commercial license, or something like that?
no, it didn't. i've just installed apprentice as usual.. I attached pictures of the window message when i launch Houdini 12.5 and my Houdini license administrator, i hope it can help to know my problem