SCI Error: "No file or directory found" in pgwrite

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What does this mean when using File->Copy To Area?

SCI Error: "No file or directory found" in pgwriter4.cpp:2452
sci_FindCorrespondingFSEByID(fSCISession, &fServer, archive, (button == cgi_MSEL_BUTTON_COPYRIGHT) ? workarea : otherarea, fse, true, &fse2Info)

iwserver: 5.5.2 Build 17976 Interwoven 20030323