I´m trying to migrate a Webserver + Mapserver to a new Ubuntu 12.04 machine. Everythings (apache2, mapserver 6.2.1 ) working so far, except a tilecached wms service (tilecache 2.11-2 is installed) which needs an extra authentification.
When I´m calling the cgi script (which deals the request) directly I get following error:
An error occurred: cannot identify image file
File "/usr/lib/pymodules/python2.7/TileCache/Service.py", line 343, in cgiHandler
format, image = service.dispatchRequest( params, path_info, req_method, host )
File "/usr/lib/pymodules/python2.7/TileCache/Service.py", line 208, in dispatchRequest
return self.renderTile(tile, params.has_key('FORCE'))
File "/usr/lib/pymodules/python2.7/TileCache/Service.py", line 138, in renderTile
data = layer.render(tile, force=force)
File "/usr/lib/pymodules/python2.7/TileCache/Layer.py", line 436, in render
image = self.renderMetaTile(metatile, tile)
File "/usr/lib/pymodules/python2.7/TileCache/Layer.py", line 397, in renderMetaTile
image = Image.open( StringIO.StringIO(data) )
File "/usr/lib/python2.7/dist-packages/PIL/Image.py", line 1980, in open
raise IOError("cannot identify image file")
I searched for hours, but cannot find a misconfiguration within the mapfiles or tilecache.cfg. All files should have correct permissions also. Unfortunately my access and error.log don´t tell me more about this.
My last guess is that something changed in python 2.7 f.e. different parameters (before we used python 2.53).
I know my question is a bit weak, but maybe someone had a similar situation. Or someone has a tip what else can be tested to find the error?
with kind regards,
Toni
