[R-sig-Geo] Error in trim(as.character(x)) in raster::projectRaster

[Tomislav Hengl]

I am getting some problems with using the raster::projectRaster  
function (trim function within that function). The example from  
package does not run any more:

pr1 <- projectRaster(r, crs=newproj)

Loading required package: rgdal
rgdal: version: 1.1-1, (SVN revision 572)
  Geospatial Data Abstraction Library extensions to R successfully loaded
  Loaded GDAL runtime: GDAL 1.11.2, released 2015/02/10
  Path to GDAL shared files: C:/Program Files/R/R-devel/library/rgdal/gdal
  GDAL does not use iconv for recoding strings.
  Loaded PROJ.4 runtime: Rel. 4.9.1, 04 March 2015, [PJ_VERSION: 491]
  Path to PROJ.4 shared files: C:/Program Files/R/R-devel/library/rgdal/proj
  Linking to sp version: 1.2-1
Error in trim(as.character(x)) :
   error in evaluating the argument 'x' in selecting a method for  
function 'trim': Error in as.vector(ln) : argument "mode" is missing,  
with no default

My session info:

R Under development (unstable) (2015-12-14 r69775)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 7 x64 (build 7601) Service Pack 1

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

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

other attached packages:
[1] rgdal_1.1-1   raster_2.4-30 sp_1.2-1

loaded via a namespace (and not attached):
[1] tools_3.3.0     Rcpp_0.12.2     grid_3.3.0      lattice_0.20-33