topoplotTFR error?

[Floris de Lange]

Dear fieldtrippers,

When using topoplotTFR, since today I get the following error:

??? Input argument "Y" is undefined.

Error in ==> fieldtrip/private/topoplot at 77
Xpos = -0.45+0.9*(Y - min(Y)) /(max(Y) - min(Y));

Error in ==> topoplotER at 268
  topoplot(cfg,datavector);

Error in ==> topoplotER at 170
    topoplotER(cfg, data);

Error in ==> topoplotTFR at 72
topoplotER(cfg, varargin{:});

As far as I can remember, this function worked fine for me last week, so
I'm wondering if I'm doing something stupid or whether there is a bug in
the function.
Any ideas?

Thanks,
Cheers,
Floris