The error seems to happen if the PhasonShell.exe file cannot be found, or if there's any corruption with that executable. This is the program for logging into Omni and making the required module/s appear.

A reinstall should help. If a reinstall over the existing Omni does not work, try un-installing and re-installing from scratch. You could also verify the file path of the .exe. It should be something like "C:\Program Files (x86)\Phason\OmniSelect\PhasonShell.exe".