I'm a HTC Desire S owner. I've problem installing APK files. It shows "There is a problem parsing the package" when trying to install apk files in ES File Explorer. It only happens when the apk files are in SDcard. It don't happen when install apk files which are located in my PC thru WiFi with ES File Explorer. It don't work with ASTRO file manager either. But I can install with AndExplorer and can install from PC (with DroidExplorer). I mostly use ES file manager and wanna install with it. I'm currently using latest version of ES file explorer. I've already checked "Allow installation of non-market apps" in setting. It did not happen with Stock ROM. Happened while using Saga3D, I don't know what I accidently did. I change to new rom 'Virtuous Quattro (ICS) and it still occur. Now I'm on Hyperion and it is still happening. Please help me.