MutSigCV error mutation_type_dictionary_file.txt.test.txt is not writeable?

Hi,
Can anyone help me!!

My input file(tab.txt)is having these fields as mentioned by one of the colleagues in the post somewhere before.
Hugo_Symbol or gene
Tumor_Sample_Barcode or patient
Variant_Classification or type
Chromosome or chr
Start_position or start
Reference_Allele or ref_allele
Tumor_Seq_Allele1, Tumor_Seq_Allele2 or newbase

I used coverage table file ,covariates table file, mutation_type_dictionary_file.txt from shared_data/example_files/MutSigCV_1.3/

I got this error:
rror using gp_MutSigCV>ensure_writeable (line 2648)
/xchip/gpprod/shared_data/example_files/MutSigCV_1.3/mutation_type_dictionary_file.txt.test.txt is not writeable
Error in gp_MutSigCV>MutSig_preprocess (line 218)
Error in gp_MutSigCV (line 184)
Traceback (most recent call last):
File "/xchip/gpprod/servers/genepattern/taskLib/MutSigCV.1.12591/run_matlab.py", line 65, in
subprocess.check_call(matlabCommand)
File "/broad/software/free/Linux/redhat_5_x86_64/pkgs/python_2.6.5/lib/python2.6/subprocess.py", line 498, in check_call
raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['/xchip/gpprod/servers/genepattern/taskLib/MutSigCV.1.12591/gp_MutSigCV', '/xchip/gpprod-upload/servers/genepattern/users/biotechnepal/uploads/tmp/run5123729264298214492.tmp/mutation.table.file/1/raj5.txt', '/xchip/gpprod/shared_data/example_files/MutSigCV_1.3/exome_full192.coverage.txt', '/xchip/gpprod/servers/genepattern/jobResults/820607/gene.covariates.txt', '/xchip/gpprod/shared_data/example_files/MutSigCV_1.3/mutation_type_dictionary_file.txt', '/xchip/gpprod/shared_data/cga/annotation/ucsc/hg19']' returned non-zero exit status 255

Thanx