调用器件时,会出现警告:*WARNING* ddMapGetFileViewType: You are trying to run a CDB executable on an OA library file 'sch.oa'. The file is in library 'rfExamples' in cell 'image_reject_rcvr_PB' in view 'schematic'. You must run an OA executable to use that library file.是怎么回事?