SynthEdit plug-ins often require the host to run as administrator. Running CbB as administrator to load synthedit plug-ins, Pentagon will run too. However, it is possible to avoid running CbB as administrator for Pentagon by modifying the permissions on
HKEY_LOCAL_MACHINE\Software\rgc:audio software\DXi\Pentagon I granting "Full Control" to Users. This image shows the mod required using regedit.