it is not possible to upgrade 1.0 to 4.0 directly. It is necessary, to upgrade to 1.1 or 2.0 or 3.0 and in a second step to 4.0. Reason is, that voiceprompts can not be converted from .sph to .wav. With OB1.1 it works, because from 1.1 on .vox-files wil be used Can you confirm this problems and how to solve it.