Version 0.12 first tries to import the statsmodels
library and only if it fails, pandas fall back to the scikits
module. Here is the piece of code that tries to do that:
try:
import statsmodels.api as sm
except ImportError:
import scikits.statsmodels.api as sm
If you type in the interpreter:
import statsmodels.api as sm
What error do you get?