Receiving Error about Express Edition or other Key Related Errors
You must place license key first in the session_start method in the global.asax file or in your application's session start. If anything is above it, the program will not work properly. Please the example below.
void Session_Start(object sender, EventArgs e)
{
Izenda.AdHoc.AdHocSettings.LicenseKey = "XXXXXXXXXXX";
//everything else below it
}