ProgDVB: no TAB for plugins/vPlug

I have installed latest version of ProgDVB 7.06.05 (x86) and vPlug 2.4.6f1, but in ProgDVB
there is no Tab for plugins.
vPlug is installed in c:\Programm Files (x86)\ProgDVB\Plugins.
I have also tried the root directory of ProgDVB (c:\Programm Files (x86)\ProgDVB\), but didn´t work either.
DVBDream is also installed and vPlug is there in the Tab and working.
Any ideas?