R help - Feb 2015 - lmerTest - difflsmeans: LS means for Post-hoc analysis

Dear fellow R users,

I am trying to calculate the difference of the least square means from a 
lmer model which has a pretty much standard form of  Y ~ A*B + (1|C/D)

I am using the difflsmeans command from the lmerTest package but it 
returns the following error line:

Error in as.data.frame.default(VarCorr(model)) :
   cannot coerce class ""VarCorr.merMod"" to a data.frame

I also tried to do it manually but apparently to no avail.

I am using the lme4 v. 1.0-6 package on Linux  (if that helps).

Any suggestions how to override this?



Thanks in advance!
Grigorios

-- 
__________________________________
Grigorios Georgolopoulos
Research Assistant
Animal Ecology
Department of Ecology and Genetics (IEG)
Evolutionary Biology Centre (EBC)
Uppsala University
Norbyv?gen 18d, SE-752 36
Uppsala, Sweden
Email: georgolopoulosggreg at hotmail.com, grigorios.georgolopoulos at ebc.uu.se