Need help, LLUnknownFieldException(LLValue unknown filed name, FileAttributes)

Sun_Livelink_Admin_(sunmic01admin_-_(deleted))

I am trying to download documents of a particular mime type to my desktop using Java LAPI,getDAPI().FetchVersion(volumnID, docID, fullPath);where DAPI is a instance of LAPI_DOCUMENTS, fullPath is the absulate path + filename. I got a LLUnknownFieldException as shown in the attached log file. It is interesting that the status code returned was 0.I appreciate your ideas or suggestions.Thanks!!==================Downloading file as: /home/yuc/DCS_applix/aw/868560_ifyoubuildit.awError downloading file: 0|868560|ifyoubuildit.awStatus: 0ApiError:ErrMssg:com.opentext.api.LLUnknownFieldException: LLValue unknown field name: FileAttributes at com.opentext.api.LLNameTable.get(LLNameTable.java:35) at com.opentext.api.LLAssoc.get(LLAssoc.java:54) at com.opentext.api.LLValue.toValue(LLValue.java:691) at com.opentext.api.LLConnect.receiveFileDownload(LLConnect.java:754) at com.opentext.api.LLConnect.executeTraditional(LLConnect.java:1583) at com.opentext.api.LLConnect.execute(LLConnect.java:349) at com.opentext.api.LAPI_DOCUMENTS.FetchVersion(LAPI_DOCUMENTS.java:677) at dcs.DCS.downloadVersions(DCS.java:205) at dcs.DCS.main(DCS.java:70) at com.opentext.api.LLConnect.executeTraditional(LLConnect.java:1583) at com.opentext.api.LLConnect.execute(LLConnect.java:349) at com.opentext.api.LAPI_DOCUMENTS.FetchVersion(LAPI_DOCUMENTS.java:677) at dcs.DCS.downloadVersions(DCS.java:205) at dcs.DCS.main(DCS.java:70)