How can I write ANOVA results to a csv file?

I want to write results from an ANOVA to a csv file, but writetable() gives me this error.

Unrecognized field name "internal.stats.DoubleTableColumnReal".

I am using the example from the ranova() documentation

load fisheriris
t = table(species,meas(:,1),meas(:,2),meas(:,3),meas(:,4),...
    'VariableNames',{'species','meas1','meas2','meas3','meas4'});
Meas = table([1 2 3 4]','VariableNames',{'Measurements'});
rm = fitrm(t,'meas1-meas4~species','WithinDesign',Meas);
ranovatbl = ranova(rm)
writetable(ranovatbl,'test_table.txt')

Answer 1

[cr]

Don't understand whats causing the problem, but the below line works

writetable(ranovatbl(1:end,:),'test_table.txt')

Really strange. Looking forward to an explanation from experts/staff if this is a bug.

[Dustin]

Thanks, yeah this works, weird that it's required though.