What for is this error?

programming flash
1

Hi all,

    I am new to flash and AS3.0.

     I have got an error here i.e.,

  Error #2044: Unhandled IOErrorEvent:. text=Error #2038: File I/O Error.
    at AddAttachment_fla::MainTimeline/AddAttachment_fla::frame1()


i.e., here "AddAttachment" is the name for .fla file.

I had also referred Flash help( i.e., F1) for error recovery. But, there is no advantage.

  Reply me... Thanx alot in advance...