Huub wrote:
> Hi,
> 
> Recently I did a cvs on pkgsrc which seemed to have worked. Only now I 
> find out that previously installed packages (from pkgsrc) like Blender, 
> Scilab, Octave and gcalctool are no longer installed. Am I correct in 
> assuming that I have to reinstall all packages after cvs?
> 

Updating pkgsrc by cvs should not remove any installed packages. 
   Your problem looks like something that can  happen after a 
'make update' for one of your packages.