KNIME Examples

When I try to open the 050005_Social_Media_Clustering workflow, nothing happens. Infact none of the workflows from opens.

When I right click on the workflow, I can see that the 'Execute' option is greyed out.

My questions

a. Do you need special privileges to run the workflows in the 'publicserver' examples ?

b. Do I need to purchase a license to run the examples?

c. Do I need to configure any settings?

My environment

Ubuntu 13.04

Knime 2.9.2

You have to copy the ones you want to open to your local workspace and open/execute/edit them from there.