dxf文件导入问题.

dxf文件导入出现下列提示，我找不到说的非法字符，请知道的朋友说下

Reading Layer Conversion File
Reading DXF file...
NOTE: Replacing illegal character $ with X in $MODEL_SPACE.
NOTE: Replacing illegal character $ with X in $PAPER_SPACE.
NOTE: Replacing illegal character * with X in *D2.
NOTE: Replacing illegal character * with X in *U3.
NOTE: Replacing illegal character * with X in *U3.
NOTE: Replacing illegal character * with X in *D4.
NOTE: Replacing illegal character * with X in *U5.
NOTE: Replacing illegal character * with X in *U5.
NOTE: Replacing illegal character * with X in *U6.
NOTE: Replacing illegal character * with X in *D8.
NOTE: Replacing illegal character * with X in *U10.
NOTE: Replacing illegal character * with X in *D9.
NOTE: Replacing illegal character * with X in *U11.
NOTE: Replacing illegal character * with X in *U10.
NOTE: Replacing illegal character * with X in *U11.
done.
Layer conversion file: #View_l.cnv
DXF file: E:\admini\Drawing1.dxf
BRD file: #Taaaaai00132.tmp
Update existing design?: NO
Use default text?: NO
DXF units: MILLIMETERS
Design units: MILS
Design precision: 2
dxf2a complete.

首先,建議你將單位儘量與dxf檔案一致

其次,乘號要用字母x表示,你看看是否用*了