Bug in latest Imlib module

["Griebling, Mike" <Mike.Griebling@alliedsignal.com>]

I found a bug in the latest Imlib module when no tiff library is installed.
To fix the problem, just use the following code extract:  

<* IF LIB_HAVE_LIBTIFF=TRUE THEN *>
                                               ,"tiff"
<* END *>
                                               )
                                  END];


Cheers,
               Michael