Client 6 and DECS 5 problem

Hello!

I have a client with lotus client 6. If this client tries to generate key documents in a DECS Administrator 5, it shows a message error says “Invalid Name”. if I Debug with debug Lotus Script option, the error is generated in line:

Call LoadCacheAdmin ()

Set collection = dbAdmin.UnprocessedDocuments

For i = 1 To collection.Count

	Set doc = collection.GetNthDocument( i )

	If (doc.SubType(0) = "RealTime Notes") And doc.name(0) = "Efectivo" Then

		If (doc.Lock(0) > 0) Then <--- HERE HAPPENS THE ERROR

any idea??