[Chameleon] Postgis layer shows up fine but get error message

[Steven De Vriendt]

Hi list,

When I active a postgis layer in chameleon I get the following
error-message:
**
 *No valid map object to write. *
*Unable to access map [/ms4w/tmp/sess_441e8a9761f2c/1142852249-1857.map]. *

*Check to see that the file exists and/or that the path and filename are
spelled correctly *

Yet my data shows up fine, anyone knows where this comes from ?
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