We are frequently facing an issue in our production enviroment where any web page with an Infragistic control encounters "Object reference not set to an instance of an object" error.

As a workaround to this issue, we found that  re-copying the EXACTLY SAME dll's from development to production enviroment  temporarily  suppresses the error . But this does'nt help either as this is a temporary fix and that we have to keep on running a script to re-copy the dll's after a specific period.

The infragistic dll's are placed in application Bin directory, Just wondering whether this can be one of the causes for the issue.

Has any one else faced this problem?

Any help in this regard will be appreciated.