"The Ext.NET initialization script was not found" exception might be thrown if use InitScriptMode="Linked"

[DaniilVeriga]

http://forums.ext.net/showthread.php?52831 http://forums.ext.net/showthread.php?60035

[fabriciomurta]

Another thread to the list: Panel Loader having Intermittent Failed Responses

This probably is triggered to whatever reason IIS instances don't share the session, where the init script is stored upon initial request. This may happen in a few scenarios:

• multiple IIS worker processes (that don't share the session -- there are means to set up how worker processes share the ASP.NET sessions between themselves)
• load-balanced IIS instances (that would require SQL or other remote persistency for the session between the instances)
• IIS is recycled often (thus possible to kill a session between the short period of time between initial request + linked script request -- which comes in the initial request's via a <script> include tag. Again, session persistency is key and would allow recycles without losses.

The initScriptMode="inline" does not require the script to be saved in the session so it is exempt from this kind of failure.