when converting a string to datetime...error (not trying to parse/send datetime to the server!)

ALTER PROCEDURE SearchAllPlayers
(
@personName,
@IDs
)

SELECT DISTINCT
                         person.personID, sports.sportsID, person.personName, sports.sport,
 
FROM            sports INNER JOIN
                person INNER JOIN
                personSport ON personSport.personID = person.personID
                       INNER JOIN
                personSport ON personSport.sportID = sports.sportsID
 
WHERE        (person.personName LIKE '%' + @personName + '%')
              AND
             (person.regDate >= { fn CURDATE() }
              AND
             (sports.sportID IN
                    (SELECT   ID FROM dbo.fnSplitter(@IDs) AS fnSplitter_1) OR @IDs = 0)

protected void Button1_Click(object sender, EventArgs e)
   {
       searchGrid();
   }

   protected void searchGrid()
   {
       SqlConnection conn = new SqlConnection(connSTR);
       com = new SqlCommand();
       conn.Open();

       com.Connection = conn;

       com.CommandText = "SearchAllPlayers";
       com.CommandType = CommandType.StoredProcedure;

       string StringWithDelimiter = string.Empty;
       for (int i = 0; i < DropDownCheckBoxes1.Items.Count; i++)
       {
           if (DropDownCheckBoxes1.Items[i].Selected)
               StringWithDelimiter += DropDownCheckBoxes1.Items[i].Value + ";";
       }

       com.Parameters.Add("@personName", SqlDbType.VarChar).Value = personName.Text;
       com.Parameters.Add("@IDs", SqlDbType.VarChar).Value = StringWithDelimiter;

       sqlDa = new SqlDataAdapter(com);
       dS = new DataSet();
       sqlDa.Fill(dS);

       conn.Close();
       GridView1.DataSource = dS;
       GridView1.DataBind();

   }