[Tilecache] symbol and label is still broken even though use metabuffer parameter

[dequan chen]

hi.
i set metaTile=true, but error occured.

my cfg file like this:

*type=WMSLayer
url=http://localhost:8080/geoserver/wms
layers= *****
*maxResolution=0.00034332275390625
levels=6
bbox=118.82081028599998,25.679567691,119.583479754,26.259759368999998*
*extent_type=loose
metaTile=true
metaBuffer=256
metaSize=20,20*

An error occurred: No module named Image
  File "F:\Cache\TileCache\Service.py", line 323, in cgiHandler
    format, image = service.dispatchRequest( params, path_info, req_method,
host )
  File "F:\Cache\TileCache\Service.py", line 208, in dispatchRequest
    return self.renderTile(tile, params.has_key('FORCE'))
  File "F:\Cache\TileCache\Service.py", line 138, in renderTile
    data = layer.render(tile, force=force)
  File "F:\Cache\TileCache\Layer.py", line 435, in render
    image = self.renderMetaTile(metatile, tile)
  File "F:\Cache\TileCache\Layer.py", line 393, in renderMetaTile
    import StringIO, Image
my TileCache version is 2.10.
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