Error in RNA-seQC

Hi,

I have this error when I try to use RNA-seQC :

RNA-SeQC v1.1.7 05/14/12
Creating rRNA Interval List based on given GTF annotations
Retriving contig names from reference
contig names in reference: 25
Loading GTF for Read Counting
Converting to refGene
Transcript objects to RefGen format: 5 s
Running IntronicExpressionReadBlock Walker ....
Arguments: [-T, IntronicExpressionReadBlock, --outfile_metrics, /mnt/seq2/seq2/SANDBOX_DIR/MARC/PE_GLE_COMPLETE/rawdata/GLE25/tophat_untrimmed/RnaseqcReport//TestId/TestId.metrics.tmp.txt, -R, /mnt/seq2/seq2/SANDBOX_DIR/MARC/DB/rnaseqc/hg19.fa, -I, /mnt/seq2/seq2/SANDBOX_DIR/MARC/PE_GLE_COMPLETE/rawdata/GLE25/tophat_untrimmed/accepted_hits_reheaded.bam, -refseq, /mnt/seq2/seq2/SANDBOX_DIR/MARC/PE_GLE_COMPLETE/rawdata/GLE25/tophat_untrimmed/RnaseqcReport//refGene.txt, -l, ERROR]
org.broadinstitute.sting.utils.exceptions.ReviewedStingException: Insufficient buffer size for Xs overhanging genome -- expand BUFFER
at org.broadinstitute.sting.gatk.datasources.providers.ReferenceView.getReferenceBases(ReferenceView.java:96)
at org.broadinstitute.sting.gatk.datasources.providers.ReadReferenceView$Provider.getBases(ReadReferenceView.java:64)
at org.broadinstitute.sting.gatk.contexts.ReferenceContext.fetchBasesFromProvider(ReferenceContext.java:148)
at org.broadinstitute.sting.gatk.contexts.ReferenceContext.getBases(ReferenceContext.java:190)
at org.broadinstitute.cga.rnaseq.gatk.CountReadMetricsWalker.countMismatchedBases(CountReadMetricsWalker.java:278)
at org.broadinstitute.cga.rnaseq.gatk.CountReadMetricsWalker.map(CountReadMetricsWalker.java:159)
at org.broadinstitute.cga.rnaseq.gatk.CountReadMetricsWalker.map(CountReadMetricsWalker.java:38)
at org.broadinstitute.sting.gatk.traversals.TraverseReads.traverse(TraverseReads.java:106)
at org.broadinstitute.sting.gatk.traversals.TraverseReads.traverse(TraverseReads.java:52)
at org.broadinstitute.sting.gatk.executive.LinearMicroScheduler.execute(LinearMicroScheduler.java:72)
at org.broadinstitute.sting.gatk.GenomeAnalysisEngine.execute(GenomeAnalysisEngine.java:248)
at org.broadinstitute.sting.gatk.CommandLineExecutable.execute(CommandLineExecutable.java:113)
at org.broadinstitute.sting.commandline.CommandLineProgram.start(CommandLineProgram.java:236)
at org.broadinstitute.sting.commandline.CommandLineProgram.start(CommandLineProgram.java:146)
at org.broadinstitute.cga.rnaseq.gatk.GATKTools.runIntronReadCount(GATKTools.java:226)
at org.broadinstitute.cga.rnaseq.ReadCountMetrics.runRegionCounting(ReadCountMetrics.java:243)
at org.broadinstitute.cga.rnaseq.ReadCountMetrics.runReadCountMetrics(ReadCountMetrics.java:58)
at org.broadinstitute.cga.rnaseq.RNASeqMetrics.runMetrics(RNASeqMetrics.java:220)
at org.broadinstitute.cga.rnaseq.RNASeqMetrics.execute(RNASeqMetrics.java:166)
at org.broadinstitute.cga.rnaseq.RNASeqMetrics.main(RNASeqMetrics.java:135)
RNA-SeQC Total Runtime: 8 min

Even trying to decrease the "-n" and "-d" parameters I still have this "BUFFER" error.

May someone help me please ?

Thanks