I set the appsetting for the temp folder of the AsynchUpload control in my machine.config file. It does not seem to work there. By cutting/pasting into my web.config, the setting seems to be picked up. So, I know the setting is valid. It looks like the snippet below.
<add key="Telerik.AsyncUpload.TemporaryFolder" value="\\SomeDevServer\e$\SomeFolder\temp\
While I can leave it in web.config, we find that "unfortunate." All our file system settings are set in machine.config! That way we can copy our website files across dev/test/production servers, including web.config without modification. Now we will have to make custom edits as deploy to different servers.
Any reason why the appsetting can't be inherited from the machine.config value?