Thanks for the reply! I don't know if my version of spss is fully patched as it is on the university computer system and so I have no control over it. (I asked the IT guy at the desk but he didnt know).
My data comes from a questionnaire with various kinds of questions so I have some Likert scale, some yes/no, some multiple choice type.
Again, following the info in the text book I have changed the measure column as follows:
for likert scale data i have Nominal
for yes/no I have Nominal
for age categories I have Ordinal
for multiple choice I have Nominal
Orignially I had it all set at scale as I didn't realise I needed to change this 'measure' column. Both before when it was all set to scale and now that I have changed it I still get the same error.
I hope this is the info you were asking for