I have a problem with my Wizard obtaining the Learning Master skill.

I have solved the Golem Quest and got my Sorcerer promoted to Wizard.

My Wizard is a Learning Expert.

I have travelled to Nighon.

I spent skill points to increase Learning skill to 7.

I use the nearby fountain to increase my Intellect to 76.

Now when I visit the Master of Learning in her home, despite fulfilling her requirements,
I cannot master Learning!

Is this a bug? Is there a way I can hack the savegame to get around it?

I am using Greyface Patch 2.0.

My savegame:
https://www.dropbox.com/s/i9m4dewpyuz8mwe/quiksave.mm7?dl=0
Oh don't forget to back up your own quiksave.mm7 if you check out my file!

Thanks in advance!