Problem with Activator.createinstance method

[vignesh28]

hi ..
i got the following error in activator.creat einstance method

'Exception has been thrown by the target of an invocation.' this is the error.


here is my code:

public object getService(Stri ng name)
{
object o = services[name];
if (null != o)
{
return o;
}
Type t = Type.GetType(PA CKAGE_PREFIX + version + "." + name);
o = Activator.Creat eInstance(t);
foreach(String headerName in HEADERS)
{
FieldInfo f = t.GetField(head erName + "Value");
if ((f != null) && (this.headers[headerName] != null))
{
f.SetValue(o, this.headers[headerName]);
}
}
if (alternateUrl != null)
{
setUrlPrefix((S oapHttpClientPr otocol) o, alternateUrl);
}
services.Add(na me, o);
return o;
}o;