We have got a problem that seems to have just start. Whenever people now set tasks and assign them to another user when that user then trys to accept it it comes up with "You do not have the permission to send the message on behalf of the specified user". How can I fix this? As I say, it has been working fine for ages and seems to suddenly have happened that we are now having these problems.
As well as some people not being able to accept tasks, some people are not able to assign tasks either (they have the relevant permissions in the delegates section).