Wrong VCF header

[JuRaGa]

Hi!

I am using the function "vcf2kinship" in rvtest to calculate a kinship matrix, but I am getting the error "Wrong VCF header", and I don't know why, as the VCF file seems correct? I cannot attach it for info because it is too big, but I hoped you could still advise?These are the lines in my script:

vcf2kinship --inVcf chrALL.imputed.mafge5pct.vcf.gz
--ped PhenoFile.txt
--bn
--out kinship_matrix
--xLabel X
--xHemi
--minMAF .05
--thread 12

Thanks for your help!