[R-sig-Geo] Error in CRS("+init=epsg:4326")

[Daniel Marcelino]

I'm having the following issue. It's been quite a while I do not play with this program, but it seems that something is not where it should be. Is there any thing I can do to fix it? 

# packages: 
library(ggmap)
library(sp)
library(rgdal)
library(rgeos)
 
 # get the city coordinates
go <- geocode("Chicago")
# create spatialPoint object
coordinates(go) <- ~ lon + lat
proj4string(go) <- CRS("+init=epsg:4326")
Error in CRS("+init=epsg:4326") : no system list, errno: 2
 
EPSG <- make_EPSG()
Error in make_EPSG() : Error opening epsg file


> sessionInfo()
R version 3.2.0 (2015-04-16)
Platform: x86_64-apple-darwin13.4.0 (64-bit)
Running under: OS X 10.10.3 (Yosemite)

locale:
[1] en_CA.UTF-8/en_CA.UTF-8/en_CA.UTF-8/C/en_CA.UTF-8/en_CA.UTF-8

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

other attached packages:
[1] rgeos_0.3-8   rgdal_0.9-2   sp_1.1-0      ggmap_2.4     ggplot2_1.0.1

loaded via a namespace (and not attached):
 [1] Rcpp_0.11.5         magrittr_1.5        maps_2.3-9         
 [4] MASS_7.3-40         munsell_0.4.2       colorspace_1.2-6   
 [7] geosphere_1.3-13    lattice_0.20-31     rjson_0.2.15       
[10] jpeg_0.1-8          stringr_1.0.0       plyr_1.8.2         
[13] tools_3.2.0         grid_3.2.0          gtable_0.1.2       
[16] png_0.1-7           digest_0.6.8        RJSONIO_1.3-0      
[19] reshape2_1.4.1      mapproj_1.2-2       stringi_0.4-1      
[22] RgoogleMaps_1.2.0.7 scales_0.2.4        proto_0.3-10    




\begin{signature}
Daniel Marcelino
☁ dm.silva at umontreal.ca 
☎ (514) 343 6111 #3799
Skype: d.marcelino 
✎ 3200 Jean Brillant,  Office C5071
Montreal, QC; H3T 1N8
Canada
\end{signature}

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