[ESS] Aquaemacs and R 2.11 - "?" help does not work

[Stanley Chu]

Hi,

I am using Aquaemacs with ESS and just upgraded to R 2.11. Everything seems fine except that when i use "?" for function help, ESS returns an error message like this:

Error in help("lm", htmlhelp = FALSE) : 
  unused argument(s) (htmlhelp = FALSE)


This problem does not exist when using the R64.app. 

Does anyone have an idea how to fix this problem? I have searched solutions online the whole day....  

Thanks,
Stanley