SAP BPC MS 7.5 Input Schedules not opening

Hi

We are implementing SAP BPC MS 7.5.

The client software and administration all installs perfectly but on some PC's the Input Schedules doesn't want to open.

The users do have all the same rights and is logged in but the input schedules doesn't want to open on some of them, neither through the BPF's or eSubmit -> Open Temples.

Does anyone know what the reason for this can be?

Thanks

Johan