ERROR: Badly defined segment, 155153381 > 2 for Plink

Question

[bgilijia3]

Dear all,

I am using Plink to analyze the association of CNVs with vascular malformation, however, it reported an error on the CNV data as follows

plink --cnv-list test2 --cnv-make-map

@----------------------------------------------------------@
|        PLINK!       |     v1.07      |   10/Aug/2009     |
|----------------------------------------------------------|
|  (C) 2009 Shaun Purcell, GNU General Public License, v2  |
|----------------------------------------------------------|
|  For documentation, citation & bug-report instructions:  |
|        http://pngu.mgh.harvard.edu/purcell/plink/        |
@----------------------------------------------------------@

Web-based version check ( --noweb to skip )
Recent cached web-check found...Problem connecting to web

Writing this text to log file [ plink.log ]
Analysis started: Thu Jul 30 14:15:44 2020

Options in effect:
        --cnv-list test2
        --cnv-make-map


Reading segment list (CNVs) from [ test2 ]

ERROR: Badly defined segment, 155153381 > 2

I have checked the start and end positions of the CNV data, there is no position whose start position is greater than its end position. Would you please inform us how to solve this problem? Thank you so much.