General Description: When Foundation is opened with HDL top-level project, other Foundations on the network cannot check out an Express license. Or, when the HDL top-level is open, the state machine editor cannot synthesize the state machine code.
This problem is due to the way licenses are handled by Foundation HDL projects. When Foundation is started with HDL as the top level, it will check out and hold an Express and constraints editor license, even if it is not performing any synthesis. This means that when other programs try to check out a license, either a new one will have to be checked out, or the check-out will be denied if there is no other license available.