Hi all,
I am trying to use the function regex to filter my inputs in a step of my workflow. But when I run the script I get the following error:
 Duplicate, conflicting or unrecognised arguments:
    
    pipeline.transform(name = 'pipeline_b_step_0::Calling step 0', task_func = make_calling, input=None, filter=regex('INDELS_realigned.bam$| rq.bam$',), output='indels.snps.g_step_0.vcf', extras=['/usr/local/java/jdk1.8.0_45/bin/java', '/home/diego/Programs/GATK/GenomeAnalysisTK.jar', 'VariantDiscovery_pipeline/reference/reference_genome.fasta', LoggerProxy(), <AcquirerProxy object, typeid 'Lock' at 0x7f41c5e6eb90>, 1], ...
At the beginning I thought it was a problem with my regular expression, but no matter what regular expression I put , always I get the same error. 
This is my line describing the task:
        make_calling_task = sub_pipeline.transform(    task_func    = make_calling,
                                                                             name          = "Calling step "+str(step),
                                                                             input           = None,
                                                                             filter            = 
regex(r"INDELS_realigned.bam$| rq.bam$"),                                                                             output         = "indels.snps.g_step_"+str(step)+".vcf",
                                                                             output_dir    = join(call_folder,"step_"+str(step)),
                                                                             extras         = [    self.JAVA, self.GATK, 
                                                                                                       self.ref_genome_project, self.logger,
                                                                                                       self.logger_mutex, self.args.nct]
       ) 
I am using ruffus version '2.6.3' and python version 2.7.6
I would appreciate if someone could help me with this problem
Thanks in advance