All error conditions
 316   can't open cache file [chkcache]
   5   can't open file
  25   http error
2217   no match for selector
  18   search string is empty!
  12   search term regular expression error
2514   sorry, access denied or file does not exist.
   3   syntax error [arg] in selector
   1   syntax error [no '/' in relpath] in selector
  15   syntax error [no '/'] in selector [pselect]
.