I RECEIVED THE MESSAGE: ANOTHER INSTANCE OF THE APPLICATION IS ALREADY RUNNING. 0xD000:01

SOL is already open. Only one instance of SOL can be used.

If you don't see SOL open, from the Task Manager, click the Applications tab, and check if SOL is already running and end task.

You can also reboot your computer to ensure the EXE is being held in memory. If the error persists, contact us for further instruction.