[no subject]

["natalie nicholls (IAH-C)" <natalie.nicholls@bbsrc.ac.uk>]

I've been running some da models, and when I went to compare then I got
this error message:

traceback()
13: eval(action, sys.parent())
12: doErrorAction("Problem in log(N): needed atomic data, got an object
of class \"list
\"",
11: log(N)
10: npar * log(N)
9: (npar * log(N))/2
8: loglik - (npar * log(N))/2
7: -2 * (loglik - (npar * log(N))/2)
6: anova.discrim(structure(.Data = list(discrim(formula =
structure(.Data = Notes ~ 
5: eval(this.call, local = sys.parent(1.))
4: do.call("anova", objectslist)
3: menuAnova(objectslist = list(decan, dequal, dhet, dhomo, dprop),
f.test = "F", 
2: eval(expression(menuAnova(objectslist = list(decan, dequal, dhet,
dhomo, dprop), 
1: 
Message: Problem in log(N): needed atomic data, got an object of class
"list"


Can anyone give any suggestion as to what's going on? 
Natalie