Hi at All!

I have this strange behavior.

I have builded a custom Ext file and made it available on CacheFly.
In my javacript application I load this file and adding it to the body of my html page. In my page On the onload event I use the class Ext.data.Store to request a json file.
But when the onload event is fired an error occur and reply is that "Ext is undefined". Instead When I re-load my page (Control+R) this error is not shown again.

Someone can help me?

Thanks in advance for any response.