The Archive Shuttle EV Export module may log following error:
2015-02-10 19:57:39Z|6964| 12|ERROR| Process|Error occured. ArchiveID: [1C135CD5DE6A12E478B3B09C37E68DBF31110000L1-EV10-11.domain1.forest1.lab.quadrotech-it.com] | ItemID: [c0328c2c-8dbb-ab67-0452-047dd31a3571] Void Get(Int32) An internal failure occurred. Internal Error: 'Catastrophic failure (0x8000ffff)'. at KVS.EnterpriseVault.Interop.IItem.Get(Int32 DetailLevel) at ArchiveShuttle.Module.EVExportModule.ItemContentRetrievers.ContentRetrieverBase.FetchItem(IItem item, Int32 detailLevel) at ArchiveShuttle.Module.EVExportModule.ItemContentRetrievers.StandardContentRetriever.FetchItem(IItem item) at ArchiveShuttle.Module.EVExportModule.ItemContentRetrievers.ContentRetrieverBase.Process(EVArchive archive, Int32 commandId, Int32 mappingId, EVExportResult item, String exportPathBase)
The EV Export module gets these responses from EV API, therefore you should review Enterprise Vault Event log for warnings or errors logged at the time when this error in the module occurres.
It is most probably related to removed EV archive after the mapping was created, or to missing items, which were removed by user or EV.
It has also been observed that this error may appear when the environment is under high load. Re-trying export of items failed due to this error may be successful.