Symbol File error

[Ricardo Wagner Martins]

Dear all,

I am using Mapserver 3.4 and PHP4. I altered the demo.map and
symbols.sym file of ms_demo example but there are 4 symbols in the layer
"roads" that gave me error in the command line SYMBOL:

msLoadMap(): General error message
                      Undefined symbol "us_highway_shield" in class 1 of
layer roads.

Thanks for any help.

Here follows a part of my symbols.sym file:


Symbol
Type ELLIPSE
Filled
Points
1 1
END
END

  Symbol
    Name 'interstate_shield'
    Type PIXMAP
    Image 'images/interstate.png'
    Transparent 7
  END
  END

    Symbol
    Name 'us_highway_shield'
    Type PIXMAP
    Image 'images/ushwy.png'
    Transparent 1
  END
  END

  Symbol
    Name 'state_highway_shield'
    Type PIXMAP
    Image 'images/sthwy.png'
  END
  END

  Symbol
    Name 'county_highway_shield'
    Type PIXMAP
    Image 'images/ctyhwy.png'
    Transparent 0
  END
  END