ibs转换 dml 模型时 出现 messages 求解

RUNNING IBISCHK COMMAND: ibischk4 "\SignalPartLib\Xilinx\virtex2.ibs\SignalPartLib\Xilinx\virtex2.dml"
IBISCHK4 V4.1.1
ERROR - File Name Requires '.ibs' Extension.
END OF IBISCHK COMMAND OUTPUT
Could not open the file \SignalPartLib\Xilinx\virtex2.ibs\SignalPartLib\Xilinx\virtex2.dml
RUNNING DMLCHECK for \SignalPartLib\Xilinx\virtex2.ibs\SignalPartLib\Xilinx\virtex2.dml.dml

Translation failed due to IBIS2DML errors.
Output saved as \SignalPartLib\Xilinx\virtex2.ibs\SignalPartLib\Xilinx\virtex2.dml.dml.txt.
Run ibis2signoise -d, a DML will be generated.
Examine it with line numbers from the log message.
这是 哪里出错了...

ERROR - File Name Requires '.ibs' Extension.
源文件后缀名不对，要求*.ibs格式....

了解谢了