This is a Windows error code that is generated by the OS when the client is trying to process an element.
The sltrace.html log file should show this error code and which element it is being generated by.
The element that is generating the error code will need to be reviewed.
Please verify that the variable or file that is being referenced in the element is correct in the element and on the OS of the client.
We have also seen that this particular return code may occur when attempting to launch a file through the Application Launcher object but the filename indicated on the Filespec field is incorrect. Ensure that the filename is spelled / typed correctly with the proper filename extension.