cannot execute dts packages with asp.net

I've got a problem executing DTS package from ASP.Net.

I use this code:

Dim oPkg As DTS.Package

oPkg = CreateObject("DTS.Package")
oPkg.LoadFromSQLServer("WIN2000", "UID", "password",
DTS.DTSSQLServerStorageFlags.DTSSQLStgFlag_Default, , , ,
"Import_Sales_History")
oPkg.Execute()
oPkg.UnInitialize()
oPkg = Nothing

I used this code before, and it always worked. Now it doesn't. The problem
is that I'm not receiving any error messages, so I cannot find out what's
wrong. When I step through the code I don't see anything unusual. But in
fact it doesn't do anything, no data has been imported. When I execute the
package manually - everything is OK.
[755 byte] By [wongqqq] at [2007-11-19 2:35:48]