xsane: saving by ext

[Pierre Frenkiel <pierre.frenkiel@gmail.com>]

hi everybody,
in the old times, it was possible, in xsane, to save "by ext":
As explained on the xsane web site:
    by ext means that the filetype is selected by the extension
    of the filename.
This is still the default when I click the save button, but
since some time (I didn't notice exactly when) , I get, for
any extension:
   Unknown file format for saving
I must then choose explicitly the filetype (JPEG,...) but I
didn't find any way to save this choice in the preferences.

xsane version: 0.998-6

Has anybody the same problem?

best regards,
--
Pierre Frenkiel