query raster layer

[Giorgio Libertà]

Hello,

I defined a layer as following

LAYER
    NAME "clc_00_l1"
    STATUS ON

    METADATA
        "wms_title" "Landcover - Level1"
        "wms_abstract" "landcover - landuse layer."
        "wms_srs" "EPSG:4623"
    END

    TYPE RASTER
    DATA "landcover/clc_00.tif"
    MAXSCALE 900000000
    MINSCALE 5
    TRANSPARENCY 100

    TEMPLATE "../templates/clc-body.html"
    HEADER "../templates/clc-header.html"
    FOOTER "../templates/clc-footer.html"

    CLASSITEM "[pixel]"
    CLASS
        NAME 'Artificial Surface'
        EXPRESSION (([pixel] > 0) and ([pixel] <= 11))
        COLOR    255    25    150
    END
    CLASS
        NAME 'Agricultural Areas'
        EXPRESSION (([pixel] > 11) and ([pixel] <= 22))
        COLOR    255    255    38
    END
    CLASS
        NAME 'Forest and semi-natural areas'
        EXPRESSION ([pixel] > 22 and [pixel] <= 34)
        COLOR    110    190    110
    END
    CLASS
        NAME 'Wetlands'
        EXPRESSION ([pixel] > 34 and [pixel] <= 39)
        COLOR    100    60    240
    END
    CLASS
        NAME 'Water bodies'
        EXPRESSION ([pixel] > 29 and [pixel] <= 44)
        COLOR    100    240    245
    END
END

the raster file is a compressed tif generated using GDAL utils.

When I try a WMS GetFeatureInfo I got the following error:
<ServiceExceptionReport version="1.1.1">
<ServiceException>
msDrawShape(): General error message. Unknown layer type.
</ServiceException>
</ServiceExceptionReport>

Please can you help me. What's wrong with my layer?
Maybe the definition is not complete?

thx

-- 
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Giorgio Libertà
European Commission - DG Joint Research Center
Institute for Environment and Sustainability
Land Management & Natural Hazards Unit
TP 261, via Fermi
Ispra (VA), 21020 Italy

e-mail: giorgio.liberta at jrc.it
Phone:  +39 0332 785309
Fax:    +39 0332 789074
Mobile: +39 340 2566207
------------------------------------------------
The views expressed are purely those of the writer and may not in
any circumstances be regarded as stating an official position of
the European Commission.