I'm easily able to reproduce this behavior in Debian and Ubuntu, and I'm not denying it looks like there is a bug here in localechooser code, one that we'll address.
However, I am able to preseed the language despite that error message showing up, so I'll further reduce the bug priority to Low.
FWIW, I've been using "language=fr" as a parameter added on the command-line, which is also equivalent to picking French in the menu for the Server CD. I've also tried the same on mini.iso (so, fairly similar to a PXE boot), with the same behavior. In all my tests, the installer *does* come up in french.
Could you please tell us more about the bug? Should we read from this that the resulting installed system does not come up in french?
I'm easily able to reproduce this behavior in Debian and Ubuntu, and I'm not denying it looks like there is a bug here in localechooser code, one that we'll address.
However, I am able to preseed the language despite that error message showing up, so I'll further reduce the bug priority to Low.
FWIW, I've been using "language=fr" as a parameter added on the command-line, which is also equivalent to picking French in the menu for the Server CD. I've also tried the same on mini.iso (so, fairly similar to a PXE boot), with the same behavior. In all my tests, the installer *does* come up in french.
Could you please tell us more about the bug? Should we read from this that the resulting installed system does not come up in french?