The purpose of this study is to provide posaconazole compassionate treatment to patients with invasive fungal infections: 1) which are resistant to standard antifungal therapies; 2) for which there are no effective therapies; 3) with a prior history of serious, severe, or life-threatening toxicities while receiving standard antifungal therapies, or 4) with pre-existing organ dysfunction which precludes the use of standard antifungal therapies.