Ah, you skipped that cut scene with Gerde then. I don't know if that would prevent you from calling the professor, maybe you still need to do something before being able to call him. If you still have 'things' you can do in other places, maybe do them and then try to call the professor again. Try talking to Gerde to see if there are any more dialogue lines from her.
I have the same problem I can't get the professors call and I can't get book publisher ether.
I have been back to all the museums 100/s times and i don't think I have missed anything
but the way its laid out who knows . Maybe I need to restart too
I have played the chapter over now 3 times and I never get more that 321 score and can't go into the next chapter.
This games is running on Windows 7 and it is not installed on the C: drive. I have see in other adventure game where they didn't load a necessary file until I put the in the task bar I fixed them by reinstalling them in program files.
Do you think I need to do that or is there something else I could have missed.