用7.9.5打开pcb出现以下错误,是什么原因呢?版本问题还是什么?谢谢, `9 O) \6 j+ @: U Info: Forward annotation has been disabled ! }9 ~( s. C- Z5 MError: Problem encountered while copying the PCB layout data from the work area in the Common Database. See PCBLogFile.txt for details. Saving of the database has failed. ) E A; r& [3 L3 q" e8 S : j' f7 T) s7 @. ^1 B8 D2 x, O0 j5 |1 i1 a