Because of hardware and software differences between PDA and Touch Panel devices and desktop PCs, some block diagram features are not supported or are supported differently on PDA and Touch Panel targets. If you place an unsupported object on the block diagram of a PDA or Touch Panel VI, the VI does not run. In most cases you see a broken Run button.
PDA and Touch Panel VIs support the following block diagram objects differently than VIs you create for LabVIEW for Windows: