Reading Agile Web D. with Rails (2nd edition)
Working with InstantRails on Windows XP Professional Sevice Pack 2
I am trying to run a migration using the command
from the command prompt.
This is the error I’m getting:
You have a nil object when you didn’t expect it!
You might have expected an instance of Array.
The error occured while evaluating nil.
Any ideas why is this occurring and how I can solve this?