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求助:allegro pcb editor 出现问题
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求助各位大虾,我在用allegro pcb editor 布线时发现布不通了,所以就关掉软件,把原来用的文件夹删掉,然后将备份的文件夹复制过来改成更原来文件夹相同的名字,以为这样就可以重新来过,免得一个个手动去删一些线和过孔,结果打开pcb editor时,电脑提示:file "**.brd" was locked on date "july 2012~~~~" by user administrator on system "~~" would you like to override the lock ?,求大神指点啊。