The following additional return values are defined for MCI sequencers:
| Value | Meaning |
|---|---|
| MCIERR_SEQ_DIV_INCOMPATIBLE | The time formats of the "song pointer" and SMPTE are singular. You can't use them together. |
| MCIERR_SEQ_NOMIDIPRESENT | This system has no installed MIDI devices. Use the Drivers option from the Control Panel to install a MIDI driver. |
| MCIERR_SEQ_PORT_INUSE | The specified MIDI port is already in use. Wait until it is free; then, try again. |
| MCIERR_SEQ_PORT_MAPNODEVICE | The current MIDI Mapper setup refers to a MIDI device that is not installed on the system. Use the MIDI Mapper from the Control Panel to edit the setup. |
| MCIERR_SEQ_PORT_MISCERROR | An error occurred with specified port. |
| MCIERR_SEQ_PORT_NONEXISTENT | The specified MIDI device is not installed on the system. Use the Drivers option from the Control Panel to install a MIDI device. |
| MCIERR_SEQ_PORTUNSPECIFIED | The system does not have a current MIDI port specified. |
| MCIERR_SEQ_TIMER | All multimedia timers are being used by other applications. Quit one of these applications; then, try again. |