If the "remote procedure call failed" error appears, when attempting to open a DL850V Scopecorder binary WDF file in Xviewer, it can be resolved by updating and installing the latest version of Xviewer. You can download the latest version of Xviewer by visiting the site below.
http://tmi.yokogawa.com/us/products/oscilloscopes/oscilloscopes-application-software/xviewer-701992/
Note: When un-installing previous versions of Xviewer, make sure to delete any remnant files left in the Yokogawa folder. The folder path is typically in C:\Program Files\Yokogawa