An error has occurred because a control with auto-generated id '...'could not be located to raise a

[Achim Domma (SyynX Solutions GmbH)]

Hi,

in my application I suddenly get the error:

"An error has occurred because a control with auto-generated id
'main:institutionManagement:institutionOverview' could not be located to
raise a postback event. To avoid this error, explicitly set the ID
property of controls that raise postback events."

The exception is thrown in Page.ProcessPostData. I fully understand the
message, but my control does not have an auto-generated id!?

The controls 'main' and 'institutionManagement' are ascx files,
'institutionOverview' is a templated databound Web Custom Control which
implementes IPostBackEventHandler.

So I have no idea what causes this error? I have the controls already
seen working and I have no glue what I have changed since.

Any hint would be really appreciated.

regards,
Achim