Custom Command Error

[Joy Appler]

I have updated the plottask.php and plot.php script to reflect the map 
being plotted.  The plot tool window appears in the right column when 
the tool is selected, however when the user clicks on either plot 
button contained in the tool window the following error appears:

Resource was not found: 
Library://FolderName/MySymbolLibrary.SymbolLibrary

Resource was not found: 
Library://FolderName/MySymbolLibrary.SymbolLibrary Exception occurred 
in method MgResourceDefinitionManager.GetDocument at line 483 in file 
c:\build_tux_area\mgdev\server\src\services\resource\ResourceDefinitionM
anager.cpp

I am not using a symbol library... does anyone know how I can remove 
this error?

Thanks,
Joy.