Herbalism

I don't know whether this is a bug or not, so i don't post it into the bug section: I can't learn herbalism although I have learned all dark age technologies. Do I need to build a special building or do I have to own any other material before being able to learn herbalism ?There's no explanation given other than just stating "Unable to learn". 

Another point: Is there any way to know how many science points I got ?

Hi Andrixius - the "Herbalism" button is divided into 2 parts, secrecy and herbalism.   Have you researched Secrecy as maybe you need to learn this first.  The secrecy research will take another 1 hour 20 minutes so I'll get back and let you know whether  I can go on and do "herbalism".
And yes I was also thinking that it would be good to know how many research points we have, but again while it would be helpful its not really necessary and somewhere down the line it could be implemented.

Hi Andrixius - the "Herbalism" button is divided into 2 parts, secrecy and herbalism.   Have you researched Secrecy as maybe you need to learn this first.  The secrecy research will take another 1 hour 20 minutes so I'll get back and let you know whether  I can go on and do "herbalism".
And yes I was also thinking that it would be good to know how many research points we have, but again while it would be helpful its not really necessary and somewhere down the line it could be implemented.

Yes I have already researched the secrecy part, so normally everything should be ready to research herbalism, if there isn't any other prerequisite.