This error is usually encountered in a Select( ) statement when SilkTest is trying to select an item from a ListBox, TreeView, ListView, etc.
The error can occur after the actual selection has occurred, or it can occur without the selection being completed. In general the error means that the object is not responding to the messages SilkTest is sending in the manner in which it expects.

If when running the script, after selecting data from an object or entering data in a textfield, the script aborts or does not recognize other objects then the following statement can be included in the script:
Agent.SetOption (OPT_VERIFY_RESPONDING, FALSE).

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