[Gretl-users] ADF test script error

Dear listers, greetings from Paris ! I am writing a script for the Stock Watson DOLS estimator. I want to do ADF tests by the descending lag method. But when i launch the script, gretl does not want to execute it, for example i have : ? adf WLOG -5 --ct Data types not conformable for operation Error executing script: halting However, when I do the manually the tests from the GUI they I am got the results. I do not see where is the problem, WLOG is a series from a file opened by the script. Thanks for your advice cheers Franck