[R] installing problems about randomForest

[Xiao Jianfeng]

Hi all,

When I tried to install package randomForest, it gave out the following 
error message:
"
 > install.packages("randomForest", dependencies = TRUE)
trying URL 
'http://www.lmbe.seu.edu.cn/CRAN/src/contrib/randomForest_4.5-12.tar.gz'
Content type 'application/x-gzip' length 82217 bytes
opened URL
==================================================
downloaded 80Kb

Cannot create directory "": No such file or directory
* Installing *source* package 'randomForest' ...
** libs
gcc -I/user_data2/jfxiao/local/lib/R/include  
-I/usr/freeware/include     -g -O2 -c classTree.c -o classTree.o
gcc -I/user_data2/jfxiao/local/lib/R/include  
-I/usr/freeware/include     -g -O2 -c regTree.c -o regTree.o
gcc -I/user_data2/jfxiao/local/lib/R/include  
-I/usr/freeware/include     -g -O2 -c regrf.c -o regrf.o
gcc -I/user_data2/jfxiao/local/lib/R/include  
-I/usr/freeware/include     -g -O2 -c rf.c -o rf.o
f77 -OPT:IEEE_NaN_inf=ON    -O2 -c rfsub.f -o rfsub.o
"rfsub.f", line 90: error(2346): expression must have logical or integer 
type
              if (decsplit < 0.0) decsplit = 0.0                         
                  ^

"rfsub.f", line 90: error(2051): expected a ")"
              if (decsplit < 0.0) decsplit = 0.0                         
                           ^

2 errors detected in the compilation of "rfsub.f".
gmake: *** [rfsub.o] Error 2
ERROR: compilation failed for package 'randomForest'
"
Can somebody help me ?

Thanks in advance.

Xiao Jianfeng