title: fail to read paj file as Network object using R 'network' package
body: <p>I have bunch of pajek networks in file format .net, but it can not be imported using read.paj from network package any more. It was working under windows. Can someone give a hand?</p>
  
  <p>read.paj(file.path) return only NULL</p>
  
  <p>The Output under debug=True in read.paj function:</p>
  
  <pre><code>[1] "nextline called... new loop started"
  [1] "vertex list set"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "arc or edge lines present"
  [1] "length of dyad list 0"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "nextline called... new loop started"
  [1] "arc or edge lines present"
  [1] "length of dyad list 0"
  [1] "nextline called... new loop started"
  [1] "nnetworks= 0"
  [1] "network.names= "
  [1] "vertex null? FALSE"
  [1] "network.title= 0"
  [1] "vector null? TRUE"
  [1] "colnames.vector= "
  [1] "projects null? TRUE"
  [1] "nprojects= 0"
  [1] "names.projects= "
  [1] "number of networks 0"
  [1] "number of projects 0"
  </code></pre>
  
  #######  .net file content
  
  <pre><code>*Vertices 19
  
  1 "1"
  
  2 "2"
  
  3 "3"
  
  4 "4"
  
  5 "5"
  
  6 "6"
  
  7 "7"
  
  8 "8"
  
  9 "9"
  
  10 "10"
  
  11 "11"
  
  12 "12"
  
  13 "13"
  
  14 "14"
  
  15 "15"
  
  16 "16"
  
  17 "17"
  
  18 "18"
  
  19 "19"
  
  *Edges
  
  1 2   
  
  1 6
  
  1 7
  
  1 16
  
  1 18
  
  2 6
  
  2 7
  
  2 11
  
  2 15
  
  2 18
  
  3 5
  
  3 8
  
  3 14
  
  3 15
  
  3 16
  
  4 5
  
  4 6
  
  4 8
  
  4 13
  
  4 14
  
  4 16
  
  4 19
  
  6 7
  
  6 8
  
  6 11
  
  6 13
  
  6 14
  
  6 18
  
  6 19
  
  7 9
  
  7 10
  
  7 11
  
  7 12
  
  7 14
  
  7 15
  
  7 18
  
  7 19
  
  8 11
  
  8 13
  
  8 14
  
  8 15
  
  8 19
  
  9 10
  
  9 11
  
  9 12
  
  9 15
  
  9 19
  
  10 11
  
  10 12
  
  10 15
  
  10 16
  
  10 17
  
  10 19
  
  11 12
  
  11 13
  
  11 14
  
  11 15
  
  11 18
  
  11 19
  
  12 15
  
  12 19
  
  13 14
  
  13 18
  
  13 19
  
  14 15
  
  14 16
  
  14 18
  
  14 19
  
  15 19
  
  16 17
  
  16 19
  
  17 19
  
  18 19
  </code></pre>