Can't connect to local database using Monetdb.R

I am trying to establish a local database connection using Monetdb.R, but for some reason it doesn't work. I am using the latest version of monetdb (MonetDB5 64 bit "Jan2014-SP3" release 2014-07-25) on Windows 7.

Here's a short reproducible example:

> library(MonetDB.R)
Carregando pacotes exigidos: DBI
Carregando pacotes exigidos: digest
> conn <- dbConnect(dbDriver("MonetDB"), "monetdb://localhost/demo")
Error in .mapiRead(con) : ERROR reading MAPI block header (0)

      

        
        
        
      

    

I have not seen this error with other users ...

> sessionInfo()
R version 3.1.1 (2014-07-10)
Platform: x86_64-w64-mingw32/x64 (64-bit)

locale:
[1] LC_COLLATE=Portuguese_Brazil.1252  LC_CTYPE=Portuguese_Brazil.1252        LC_MONETARY=Portuguese_Brazil.1252
[4] LC_NUMERIC=C                       LC_TIME=Portuguese_Brazil.1252    

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] MonetDB.R_0.9.4 digest_0.6.4    DBI_0.3.0      

loaded via a namespace (and not attached):
[1] tools_3.1.1