#3 Cached copy of web.config not updated

[Farshid Hosseini]

Cached copy of web.config is not updated when the control modifies web.config.

1. Control.cs, line 652: Although control settings are defined and web.config is saved, call to GetDebugMode() throws NullReferenceException.
2. ConfigurationSection.cs, line 143: Handlers are added to web.config and the file is saved, but call to those handlers results "not found" error.

The only way to stop such errors and update cached copy is to open web.config manually and save it.