The client is using IE-8 for accessing the application. Our web application is using caching enabled for java script functions. After deploying in the client server, new functionalities are not enabled even after clearing the cache.
This happens time to time when corporate networks are involved. A previous version of the application most likely got cached on the network. There are ways around this depending on what platform you have been using to develop the application. Is this Windows or Linux? What language is the core of the application?