Hi,

I have problem with the callback panels generating the following message.

The callback on 'ctl03_ctl00_cbPanelCheques' has failed because the server did not reconize this callback and processed it as normal request. This can occur if there are multiple Callback/CallbackPanel control was initially dynamically loaded but wasn't loaded for this callback.

I have had this problem during development before but after carefull cleanup of the code, this problem disappeared. While we are doing User Acceptance Testing, this problem comes up but it s very unpredictable, sometimes if comes up after users has been on the system for 5 minutes and going through different part of the application. Looks lik the pattern is after they use it for a while after a number of callbacks has occured. There is no definite places where it break, the worst thing is that after it happened, it will affect all users, looks like the server dll is stuck and I cannot clear the error unless I redeploy the code. When it happened during development, I have to close the project and reopen to clear the problem.

Can you please give me some advise on the following:

1. How to clear the problem when it occur in a production env? restart IIS or server etc.
2. Is there any limitation to how many nested callback I can have? I have about 3 nested level of controls with callback panels and they are all dynamically loaded.
3. Is there any debugging tool or option to see how the EO is handling the callbacks?

I need to have a quick fix for this because I am holding up the UAT right now.

Thanks in advance.

I will try to debug my code further. Is there any explanation why I have to redeploy code to stop the error? Is it because the EO dll is still loaded in memory? but how come I cannot reset the server by restart IIS?

Thanks