Me and some others can't do it from different reasons, one of them is loosing the warranty on the device. Some people will just root (removes factory limitations) the device and problem gone. The reason is that this version of Android blocks the option of writing data to the external SDcard. The error message pops up when the installation try to create the sys.txt, and when all settings should be save in the 'save' folder. When Android 4.4.2 (KitKat) was released, we've found out that we get an error message when installing Igo Primo on an external SDcard.