asp db fejl

HEj.

jeg er snart ved at blive tosset over det her fejl.
er der nogen der ved hvad det er ?


Error Type:
(0x80004005)
Unspecified error
/ana/test12.asp, line 4





<%
set Conn= server.CreateObject("ADODB.Connection")
Conn.Open "Data Source="& server.mappath("db/mindb.mdb") & ";Provider=Microsoft.Jet.OLEDB.4.0;"
set RS= Conn.Execute("SELECT * FROM input")
fra_by = "<OPTION VALUE=""none"">Vælg fra by</OPTION>"
til_by = "<OPTION VALUE=""none"">Vælg fra by</OPTION>"
i = 1
Do Until RS.EOF   

      fra_by =  fra_by & "<OPTION VALUE=""" & rs("fra_by") & """>" & rs("  fra_by") & "</OPTION>"
      til_by = OptionStrings & "<OPTION VALUE=""" & rs("til_by") & """>" & rs("til_by") & "</OPTION>"
   
 
    i = i +1
    rs.MoveNext
Loop
rs.Close
Conn.close
%>
<HTML>
<head>
</head>
<body><center>
<form name="test12">
<p><select name="fra_by" size="1" ><%=fra_by%></select></p>
<table>
<tr>
<td><select name="til_by" size="1" ><%=til_by%></select></td>
</tr>
</table>
<p>&nbsp;</p>
</form>
</center>
</body>
</HTML>


linje 4 = set RS= Conn.Execute("SELECT * FROM input")