This is a an open-label, dose-escalation, first-in-man (FIM) study designed to explore the safety, tolerability, pharmacokinetics, and clinical activity of an investigational drug, EMD 1204831, in patients with advanced solid tumors who have not responded to previous therapies or for whom no other therapies are available. Subjects will receive EMD 1204831 twice a day (BID) during each 21-day cycle until disease progression or unacceptable toxicity.