CAM350导入GERBER到最后一步出现这样的提示?急啊!

liulihui

出现了:apertures are used which have a size of 0,是怎么回事?请赐教解决方法!
<img src="attachments/dvbbs/2012-4/20124241834921738.jpg" border="0" onclick="zoom(this)" onload="if(this.width>document.body.clientWidth*0.5) {this.resized=true;this.width=document.body.clientWidth*0.5;this.style.cursor='pointer';} else {this.onclick=null}" alt="" />