CummeRbund (CS heatmap error message)

Question

[saj98]

Hello
I am using cummeRbund package to analyse my data. When I use the following code

h<-csHeatmap(mySigMat,cluster='both')

I get the following error

Error in (function (classes, fdef, mtable)  : unable to find an inherited method for function 'csHeatmap' for signature '"gg"'.

Any idea what could be causing this?

Thank you for your time