Unable to catch GDI+ exceptions

[Unable to catch GDI+ exceptions]

While working with fusion charts serversideimagehandler i was not able to catch the exceptions when process doesnot have any write permissions to target folder. I want to show this exception to user but unforunately i am not able to catch the exception.

However the type of exception is System.Exception and i have looked in to event manager to check the error message which is:

An unhandled exception occurred and the process was terminated.

Application ID: /LM/W3SVC/9/ROOT

Process ID: 10824

Exception: System.Exception

Message: Image saving failed:
A generic error occurred in GDI+.

StackTrace:    at FusionCharts.ServerSideHandlerBase.initializeObjects()
   at FusionCharts.ServerSideHandlerBase.setParameters(String swfPath, Int32 width, Int32 height, String dataXML, String dataURL, String imageFileName)
   at FusionCharts.ServerSideHandlerBase.startProcessThread(Object oSSH)
   at System.Threading.ExecutionContext.runTryCode(Object userData)
   at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.ThreadHelper.ThreadStart(Object obj)


I am looking for any resolution for this.

Please suggest how to proceed on this.

Thanks,