Compression issue when saving anR project - r

Question

I solved the problem by moving R installation directory out of disk C. Thanks Joris for the great suggestions! I think the R core team should also take this as a bug and do something against the protecting mechanism of windows xp.
Dear Community:
While using the BIOMOD packages in R, I always get the following problem:
Error in xzfile(file, "wb", compression = 9) : cannot open the connection
In addition: Warning message:
In xzfile(file, "wb", compression = 9) :
cannot initialize lzma encoder, error 5
It was said by the author of the package and also in the help file of "save" that the problem should be caused by lack of permission to write. However, as I am logging in as administative account and have assess to all operations, I have no idea what the problem is. Can anybody help me out? I really need to run the package now. Thanks in advance~
Sincerely,
Marco
Below is the illustration in the help file of "save":
The most common reason for failure is lack of write permission in
the current directory. For 'save.image' and for saving at the end
of a session this will shown by messages like
Error in gzfile(file, "wb") : unable to open connection
In addition: Warning message:
In gzfile(file, "wb") :
cannot open compressed file '.RDataTmp',
probable reason 'Permission denied'
The defaults were changed to use compressed saves for 'save' in
2.3.0 and for 'save.image' in 2.4.0. Any recent version of R can
read compressed save files, and a compressed file can be
uncompressed (by 'gzip -d') for use with very old versions of R.*
Sorry for the ommision of the information:
Here is the sessionInfo():
> sessionInfo()
R version 2.12.2 (2011-02-25)
Platform: i386-pc-mingw32/i386 (32-bit)
locale:
[1] LC_COLLATE=Chinese_People's Republic of China.936
[2] LC_CTYPE=Chinese_People's Republic of China.936
[3] LC_MONETARY=Chinese_People's Republic of China.936
[4] LC_NUMERIC=C
[5] LC_TIME=Chinese_People's Republic of China.936
attached base packages:
[1] splines stats graphics grDevices utils datasets methods
[8] base
other attached packages:
[1] BIOMOD_1.1-6.8 foreign_0.8-42 gam_1.04
[4] randomForest_4.6-2 mda_0.4-1 class_7.3-3
[7] gbm_1.6-3.1 lattice_0.19-17 MASS_7.3-11
[10] Design_2.3-0 Hmisc_3.8-3 survival_2.36-5
[13] rpart_3.1-48 nnet_7.3-1 ade4_1.4-16
[16] rgdal_0.6-33 dismo_0.5-19 rJava_0.9-0
[19] raster_1.7-47 sp_0.9-78
loaded via a namespace (and not attached):
[1] cluster_1.13.3 grid_2.12.2 tools_2.12.2
Now I found that the problem come form the lzma encoder in doing "save":
> x<-runif(100)
> save(x, file = "F:/test.gzip", compress='gzip')
> save(x, file = "F:/test.xz", compress='xz')
Error in xzfile(file, "wb", compression = 9) : cannot open the connection
>

Answer 1

I had a similar issue when trying to project to a new scenario (a tables containing columns corresponding to the predictor variables) after having run the modeling procedure using 8 models.
The first table (approx 250,000 rows) ran fine, and I was able to save the results as a .csv file. However the second one (approx 380,000 rows) resulted in the above error message, and some of the files were not written to the project folder.
I have since cut all the tables down to a maximum of 260,000 rows and I no longer recieve the error message. It was a bit of a pain doing it in multiple runs, but once I had written the script once, I just used find and replace in MS Word to change it for each run.