ERDAS 9.2 autosync workstaion问题？

ERDAS 9.2 autosync workstaion自动纠正问题？<br>点击“autosync workstaion”后，打开process菜单下的project properties，设置如下：<br>APM Strategy中input layer to use和reference layer to use一致；<br>Geometric Model中output geometric model type是polynomial,maximum polynomial order是3;<br>Projection中选择same as refernce lmage;<br>output中resample settings是nearest neighbor，X/Y都是30<br>然后在“input images”和“reference image”设置好，选择了3个点，第四个点应该是自动出来，结果无任何反应，点process菜单下的Run APM后，纠正的影像也不对。<br>请大家告诉我，怎么进行autosync workstaion自动纠正？<br>谢谢

<P>纠正的影像都IMG格式。</P>