各位请帮忙:录制完成后,在vegen里回放出现错误

hyaya

部分代码如下:
lr_think_time(2);
        web_submit_data("PersonalPhoto.aspx",
                "Action=http://133.124.45.7/nPersonal/PersonalPhoto.aspx",
                "Method=POST",
                "RecContentType=text/html",
                "Referer=http://133.124.45.7/nPersonal/PersonalPhoto.aspx",
                "Snapshot=t6.inf",
                "Mode=HTTP",
                ITEMDATA,
                "Name=__EVENTTARGET", "Value=", ENDITEM,
                "Name=__EVENTARGUMENT", "Value=", ENDITEM,
                "Name=__LASTFOCUS", "Value=", ENDITEM,
                "Name=__VIEWSTATE", "Value={Siebel_Analytic_ViewState8}", ENDITEM,
                "Name=SelectPage", "Value=1", ENDITEM,
                "Name=__VIEWSTATEENCRYPTED", "Value=", ENDITEM,
                "Name=__EVENTVALIDATION", "Value=tQaTl4jjhrQ1ed+8AqALWfxrQ7/wXCoWwQ27fdpXJB+jtC2zV05npnHNSfDhSeZgWDFELUYM70qzzA4+kT7URbUsJY6phSVSZM0KQ+LNOP4x37OSLiIrerhBtRx30IVVhebYNZWUF0QqLpIhdLgWqepBde47GgSNDx+dUgShOpd6hXLXJGfgFpFdaCCffxYFfLbyKX5CjSiZGGTCMxHQvoXivFjXunfuuklT5Yebhais4DsmvmcOpywBMqW6GM52ZF7+vObSoDNrH2gHgn4UI/vjtSRh/ETCr5t7F0omKiwDFpz7MxBFP+FOxh1fGyzyoVJ4jyIyD/21025Al4W0SlObbr4xgHq/zl09rt+MS/ZDkDOH0CVgLvI5fEVUKgydtwXZyEND/4V1sOT5P45osA==", ENDITEM,
                "Name=dtPhotoList$ctl02$ImageButton1.x", "Value=64", ENDITEM,
                "Name=dtPhotoList$ctl02$ImageButton1.y", "Value=13", ENDITEM,
                LAST);

错误提示如下:Action.c(771): Error -26612: HTTP Status-Code=500 (Internal Server Error) for "http://133.124.45.7/nPersonal/PersonalPhoto.aspx"          [MsgId: MERR-26612]
Action.c(771): web_submit_data("PersonalPhoto.aspx") highest severity level was "ERROR", 7546 body bytes, 296 header bytes         
请各位高手指点,先谢谢各位了.