PVBLOAD.EXE is the eMbedded Visual BASIC(eVB) loader. We didn't include it in this build of .NET. The error message comes from the Graphics Master loader, which needs pvbload.exe to launch eVB applications in the Startup folder(s).
This error message won't affect operation of your system, but if you would like to eliminate the error message, change your ADSLOAD.REG file as follows: [HKEY_LOCAL_MACHINE\Platform\LaunchApps]
"LaunchEXE"=dword:1
"LaunchVB"=dword:0