R help - Oct 2009 - run WinBUGS under R, and kept getting the error message

Dear R help lists,

Hello!

I ran WinBUGS under R using the function bugs, but I kept getting the following
error message.

Error in FUN(X[[3L]], ...) : 
  .C(..): 'type' must be "real" for this format

I can not find the reason.

I am freaking out.

Could any one have a look at the model codes and R codes, and help me with it?

Model codes:


model

     {  
          for( i in 1:N)  {
                 r[i]~dbin(p[i],n[i])
                 beta~dnorm(0,1.0E-4)
                 logit(p[i])<-beta+gamm1*x[i,1]+gamm2*x[i,2]+gamm3*x[i,3])
                 }

gamm1~dnorm(0,tau1)
tau1~dgamma(1.0E-3,1.0E-3)
gamm2~dnorm(0,tau2)
tau2~dgamma(1.0E-3,1.0E-3)
gamm3~dnorm(0,tau3)
tau3~dgamma(1.0E-3,1.0E-3)

}

R codes:

x<- read.table ("C:\\Documents and
Settings\\zhong\\Desktop\\bino\\gen.csv", sep=",",header=TRUE)
y<-read.table("C:\\Documents and
Settings\\zhong\\Desktop\\bino\\phe.csv",sep=",",header=TRUE)


library(R2WinBUGS)

   N <- nrow(x)
   n<-y$n
   r<-y$r
   
   
   data <- list ("n","r","x","N")
   inits <- function(){list(gamm1=0,gamm2=0,gamm3=0,tau1=1,tau2=1,
                       tau3=1,beta=0)}
                   
   parameters <- c("gamm","tau")
   logit.sim <- bugs (data, inits, parameters,"bino.model.txt",
n.chains=1, n.iter=1000,debug=TRUE)
print(logit.sim)
plot(logit.sim)
attach.bugs(logit.sim)

 		 	   		  
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