求教一个ＡＳＰaddnew出错

请教一下，有下面一段代码：
         set rs = server.CreateObject("adodb.recordset")  
         sqlstr="select * from weixiufuwu where paigongdanhao is null"
         rs.open sqlstr,conn,1,3   
                 
                 rs.addnew
                 rs("paigongdanhao")=paigongdanhao
                 rs("riqi") = riqi
                 rs("xiangxidizhi")=louhao&menpaihao
                 rs("dangshiren") = dangshiren
                 rs("weixiushixiang") = baoxiushixiang
                 rs("xb")="´ý´¦Àí "
               
               
                 rs("laidiandianhua") = laidiandianhua
                 rs("suijima")=pass
                 rs.update
                 
                 rs.close '//¹Ø±ÕÊý¾Ý¼¯
                 set rs = nothing
                 conn.close'//¹Ø±ÕÊý¾Ý¿âµÄÁ¬½Ó
                 set conn = nothing
系统出错提示为Microsoft JET Database Engine 错误 '80040e09'

不能更新。数据库或对象为只读。

/baoxiu.asp，行 72
出错行为：rs.addnew
不知道为什么我在本机测试是可以通过的，但放在服务器上就报错．在线等，谢谢各位指教！