Hello all!<br><br>I have a Mapserver WMS + Openlayers application, using Geoext sublayers:<br>- LAYER1<br> - SUBLAYER11<br> - SUBLAYER12<br>-LAYER2<br> SUBLAYER21<br>...<br><br><br>But when I try to turn on two or more layer´s sublayers, i got the error:<br>
<br>An error occurred: Could not combine images: Is it possible that some
layers are not
8-bit transparent images? <br><br>(Error was: bad transparency mask)
File "C:\inetpub\wwwroot\Openlayer\<div id=":ai" class="ii gt">TileCache\Service.py", line
323, in cgiHandler
format, image = service.dispatchRequest( params, path_info,
req_method, host )
File "C:\inetpub\wwwroot\Openlayer\TileCache\Service.py", line
234, in dispatchRequest
raise Exception("Could not combine images: Is it possible that some
layers are not \n8-bit transparent images? \n(Error was: %s)" % E)
<br><br>Cache miss: -180.0,-90.0,0.0,90.0, Tile: x: 0, y: 0, z: 0, time:
0.828000068665
Cache miss: -180.0,-90.0,0.0,90.0, Tile: x: 0, y: 0, z: 0, time:
0.135999917984<br><br><br>Any idea?<br><br>Thanks<br></div><br><br>