seems to be an error on line 21 of exiftool.rb

[unbewusst]

I had to change line 21 to
exiftool_version.to_f > 0.0

because as steated on line 24

This is a string, not a float, to handle versions like "9.40" properly.

also I'm planning to add functionnality to write GPS datas...

[unbewusst]

first mokeup of my addon #setGPS
class Exiftool
def self.setGPS file, gps
exiftool_opts = ""
gps.each do |field, value|
exiftool_opts << "'-EXIF:#{field}=#{value}' "
end
cmd = "#{self.command} #{exiftool_opts} #{Shellwords.escape file.to_s} 2> /dev/null"
#puts "cmd = '#{cmd}'"
return #{cmd}.strip.gsub(/^(\d+).*/, '\1').to_i == 1
end
end

I'll arrange, as u, to set several files instead of only one...

[unbewusst]

the backticks are laking because of pasting I mean