Plugins are not appearing in vvvv

I have a strange problem: I installed vvvv on two pc’s (both v.4.17). One configuration is working perfectly. On the second PC I can’t find the dll’s from the plugin folder (e.g. Timeline) in the vvvv list. If I open a patch which is using one of these plugins, it doesn’t appear. Any additional installation needed?

In girlpower folder there is a patch called PluginTester, if you don’t see the 3 plugins off that patch, you are missing .NET2.0.

yes, net2.0 was missing, thanks.