Type mismatch: '[string: ","]'

Hej.

Jeg får denne fejl:
Microsoft VBScript runtime error '800a000d'

Type mismatch: '[string: ","]'

/peppino.dk1/bruger.asp, line 158


Her er koden:
id = request("id")
set karakter2 = Server.CreateObject("ADODB.Recordset")
karakter2.Open "SELECT * FROM bruger WHERE id=" & id, conn, 1, 3
if karakter2("brugerid") = "" then
karakter2("brugerid") = "," & brugerop("id") & ","
else
karakter2("brugerid") = karakter2("brugerid") + brugerop("id") & "," 'Linje 158
end if
karakter2.Update
karakter2.close

/Peppino