diff --git a/contrib/calcDistance.lua b/contrib/calcDistance.lua
index c21dd69..1c76c72 100644
--- a/contrib/calcDistance.lua
+++ b/contrib/calcDistance.lua
@@ -1,6 +1,6 @@
 --[[
     This file is part of darktable,
-    Copyright 2014 by Tobias Jakobs.
+    Copyright 2014-2016 by Tobias Jakobs.
 
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -26,7 +26,7 @@ USAGE
 ]]
    
 local dt = require "darktable"
-dt.configuration.check_version(...,{2,0,1})
+dt.configuration.check_version(...,{3,0,0})
 
 local function calcDistance()
 	local sel_images = dt.gui.selection()
@@ -71,6 +71,11 @@ local function calcDistance()
     local angle = 2 * math.atan2(math.sqrt(a), math.sqrt(1-a)); 
     local distance = earthRadius * angle; -- Distance in km  
 
+    -- Add the elevation to the calculation
+    local elevation = 0;
+    elevation = math.abs(ele1 - ele2) / 1000;  --in km
+    distance = math.sqrt(math.pow(elevation,2) + math.pow(distance,2) );
+
     dt.print(distance.." km")
 
 
diff --git a/contrib/gps_select.lua b/contrib/gps_select.lua
index 14fbf75..6955971 100644
--- a/contrib/gps_select.lua
+++ b/contrib/gps_select.lua
@@ -24,7 +24,7 @@ USAGE
 ]]
    
 local dt = require "darktable"
-dt.configuration.check_version(...,{2,0,1})
+dt.configuration.check_version(...,{2,0,1},{3,0,0})
 table = require "table"
 
 local function selectWithGPS()
diff --git a/contrib/hugin.lua b/contrib/hugin.lua
index 819e5b2..40c2371 100644
--- a/contrib/hugin.lua
+++ b/contrib/hugin.lua
@@ -35,8 +35,8 @@ This plugin will add a new storage option and calls hugin after export.
 
 local dt = require "darktable"
 
--- should work with darktable API version 2.0.0
-dt.configuration.check_version(...,{2,0,0})
+-- works with darktable API version 2.0.0 and 3.0.0
+dt.configuration.check_version(...,{2,0,0},{3,0,0})
 
 local function checkIfBinExists(bin)
   local handle = io.popen("which "..bin)
diff --git a/contrib/kml_export.lua b/contrib/kml_export.lua
index da3c2d4..ff5ab53 100644
--- a/contrib/kml_export.lua
+++ b/contrib/kml_export.lua
@@ -33,7 +33,7 @@ USAGE
 ]]
    
 local dt = require "darktable"
-dt.configuration.check_version(...,{2,0,1})
+dt.configuration.check_version(...,{3,0,0})
 
 local function spairs(_table, order) -- Code copied from http://stackoverflow.com/questions/15706270/sort-a-table-in-lua
     -- collect the keys
@@ -110,21 +110,29 @@ local function create_kml_file(storage, image_table, extra_data)
 
     -- Create the thumbnails
     for _,image in pairs(image_table) do
-	local path, filename, filetype = string.match(image, "(.-)([^\\/]-%.?([^%.\\/]*))$")
-	filename = string.upper(string.gsub(filename,"%.", "_"))
+        if ((_.longitude and _.latitude) and 
+            (_.longitude ~= 0 and _.latitude ~= 90) -- Sometimes the north-pole but most likely just wrong data
+           ) then
+            local path, filename, filetype = string.match(image, "(.-)([^\\/]-%.?([^%.\\/]*))$")
+	    filename = string.upper(string.gsub(filename,"%.", "_"))
         
-        -- convert -size 92x92 filename.jpg -resize 92x92 +profile "*" thumbnail.jpg
-        --	In this example, '-size 120x120' gives a hint to the JPEG decoder that the image is going to be downscaled to 
-        --	120x120, allowing it to run faster by avoiding returning full-resolution images to  GraphicsMagick for the 
-        --	subsequent resizing operation. The '-resize 120x120' specifies the desired dimensions of the output image. It 
-        --	will be scaled so its largest dimension is 120 pixels. The '+profile "*"' removes any ICM, EXIF, IPTC, or other
-        --	profiles that might be present in the input and aren't needed in the thumbnail.
+            -- convert -size 92x92 filename.jpg -resize 92x92 +profile "*" thumbnail.jpg
+            --	In this example, '-size 120x120' gives a hint to the JPEG decoder that the image is going to be downscaled to 
+            --	120x120, allowing it to run faster by avoiding returning full-resolution images to  GraphicsMagick for the 
+            --	subsequent resizing operation. The '-resize 120x120' specifies the desired dimensions of the output image. It 
+            --	will be scaled so its largest dimension is 120 pixels. The '+profile "*"' removes any ICM, EXIF, IPTC, or other
+            --	profiles that might be present in the input and aren't needed in the thumbnail.
 
-        local concertToThumbCommand = "convert -size 96x96 "..image.." -resize 92x92 -mattecolor \"#FFFFFF\" -frame 2x2 +profile \"*\" "..exportDirectory.."/"..imageFoldername.."thumb_"..filename..".jpg"
-        -- USE coroutine.yield. It does not block the UI
-        coroutine.yield("RUN_COMMAND", concertToThumbCommand)
-        local concertCommand = "convert -size 438x438 "..image.." -resize 438x438 +profile \"*\" "..exportDirectory.."/"..imageFoldername..filename..".jpg"
-        coroutine.yield("RUN_COMMAND", concertCommand)
+            local concertToThumbCommand = "convert -size 96x96 "..image.." -resize 92x92 -mattecolor \"#FFFFFF\" -frame 2x2 +profile \"*\" "..exportDirectory.."/"..imageFoldername.."thumb_"..filename..".jpg"
+            -- USE coroutine.yield. It does not block the UI
+            coroutine.yield("RUN_COMMAND", concertToThumbCommand)
+            local concertCommand = "convert -size 438x438 "..image.." -resize 438x438 +profile \"*\" "..exportDirectory.."/"..imageFoldername..filename..".jpg"
+            coroutine.yield("RUN_COMMAND", concertCommand)
+        end
+
+        -- delete the original image to not get into the kmz file
+        local rmCommand = "rm "..image
+        coroutine.yield("RUN_COMMAND", rmCommand)
 
         local pattern = "[/]?([^/]+)$"
         filmName = string.match(_.film.path, pattern)
@@ -134,7 +142,7 @@ local function create_kml_file(storage, image_table, extra_data)
     exportKMZFilename = filmName..".kmz"
 
     -- Create the KML file
-    kml_file = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
+    local kml_file = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
     kml_file = kml_file.."<kml xmlns=\"http://www.opengis.net/kml/2.2\">\n"
     kml_file = kml_file.."<Document>\n"
 
@@ -149,8 +157,13 @@ local function create_kml_file(storage, image_table, extra_data)
             (image.longitude ~= 0 and image.latitude ~= 90) -- Sometimes the north-pole but most likely just wrong data
            ) then
             kml_file = kml_file.."  <Placemark>\n"
-            kml_file = kml_file.."    <name>"..image.filename.."</name>\n"
-            --kml_file = kml_file.."    <description></description>\n"
+	    if (image.title and image.title ~= "") then
+              kml_file = kml_file.."    <name>"..image.title.."</name>\n"
+            else
+              kml_file = kml_file.."    <name>"..image.filename.."</name>\n"
+            end
+            
+            kml_file = kml_file.."    <description>"..image.description.."</description>\n"
             
             kml_file = kml_file.."    <Style>\n"
             kml_file = kml_file.."      <IconStyle>\n"
@@ -197,7 +210,11 @@ local function create_kml_file(storage, image_table, extra_data)
 	  if ((image.longitude and image.latitude) and 
               (image.longitude ~= 0 and image.latitude ~= 90) -- Sometimes the north-pole but most likely just wrong data
              ) then
-              kml_file = kml_file.."        "..string.gsub(tostring(image.longitude),",", ".")..","..string.gsub(tostring(image.latitude),",", ".")..",0\n"
+              local altitude = 0;
+              if (image.elevation) then
+                altitude = image.elevation;
+              end
+              kml_file = kml_file.."        "..string.gsub(tostring(image.longitude),",", ".")..","..string.gsub(tostring(image.latitude),",", ".")..",altitude\n"
           end
       end
       kml_file = kml_file.."      </coordinates>\n"
@@ -222,7 +239,7 @@ local function create_kml_file(storage, image_table, extra_data)
         local createKMZCommand = "zip --test --move --junk-paths "
         createKMZCommand = createKMZCommand .."\""..exportDirectory.."/"..exportKMZFilename.."\" "
         createKMZCommand = createKMZCommand .."\""..dt.configuration.tmp_dir.."/"..exportKMLFilename.."\" \""..dt.configuration.tmp_dir.."/"..imageFoldername.."\"*"
-	coroutine.yield("RUN_COMMAND", createKMZCommand) 
+	coroutine.yield("RUN_COMMAND", createKMZCommand)
     end
 
 -- Open the file with the standard programm    
diff --git a/contrib/preferenceExamples.lua b/contrib/preferenceExamples.lua
index 34117e6..9317aab 100644
--- a/contrib/preferenceExamples.lua
+++ b/contrib/preferenceExamples.lua
@@ -22,7 +22,7 @@ USAGE
 * require this script from your main lua file
 ]] 
 local dt = require "darktable"
-dt.configuration.check_version(...,{2,0,1})
+dt.configuration.check_version(...,{2,0,1},{3,0,0})
 
 dt.preferences.register("preferenceExamples",        -- script: This is a string used to avoid name collision in preferences (i.e namespace). Set it to something unique, usually the name of the script handling the preference.
                         "preferenceExamplesString",  -- name
diff --git a/official/check_for_updates.lua b/official/check_for_updates.lua
index 659bc28..d102e73 100644
--- a/official/check_for_updates.lua
+++ b/official/check_for_updates.lua
@@ -31,7 +31,7 @@ local dt = require "darktable"
 local https = require "ssl.https"
 local cjson = require "cjson"
 
-dt.configuration.check_version(...,{2,0,0})
+dt.configuration.check_version(...,{2,0,0},{3,0,0})
 
 -- compare two version strings of the form "major.minor.patch"
 -- returns -1, 0, 1 if the first version is smaller, equal, greater than the second version,
diff --git a/official/delete_long_tags.lua b/official/delete_long_tags.lua
index 2986f86..921a438 100644
--- a/official/delete_long_tags.lua
+++ b/official/delete_long_tags.lua
@@ -29,7 +29,7 @@ all tags longer than the given length will be automatically deleted at every res
 ]]
 
 local dt = require "darktable"
-dt.configuration.check_version(...,{2,0,0})
+dt.configuration.check_version(...,{2,0,0},{3,0,0})
 
 dt.preferences.register("delete_long_tags", "length", "integer",
                         "maximum length of tags to keep",
diff --git a/official/generate_image_txt.lua b/official/generate_image_txt.lua
index 7d8b697..416a8ce 100644
--- a/official/generate_image_txt.lua
+++ b/official/generate_image_txt.lua
@@ -31,12 +31,12 @@ USAGE
 
 -- TODO:
 --  * enable showing of the txt file (plugins/lighttable/draw_custom_metadata) if this script is enabled
---  * maybe allow a lua command returning text instead of a command line call ? both ?
+--  * maybe allow a lua command returning text instead of a command line call? both?
 --  * make filenames with double quotes (") work
 
 local dt = require "darktable"
 require "darktable.debug"
-dt.configuration.check_version(...,{2,1,0})
+dt.configuration.check_version(...,{2,1,0},{3,0,0})
 
 dt.preferences.register("generate_image_txt",
                         "enabled",
diff --git a/official/hello_world.lua b/official/hello_world.lua
index e9028fb..c2997ac 100644
--- a/official/hello_world.lua
+++ b/official/hello_world.lua
@@ -27,7 +27,7 @@ USAGE
 
 ]]
 local dt = require "darktable"
-dt.configuration.check_version(...,{2,0,0})
+dt.configuration.check_version(...,{2,0,0},{3,0,0})
 
 dt.print("hello, world")
 
diff --git a/official/image_path_in_ui.lua b/official/image_path_in_ui.lua
index ba93d2d..77b1f9f 100644
--- a/official/image_path_in_ui.lua
+++ b/official/image_path_in_ui.lua
@@ -29,7 +29,7 @@ This plugin will add a widget at the bottom of the left column in lighttable mod
 
 ]]
 local dt = require "darktable"
-dt.configuration.check_version(...,{2,0,0})
+dt.configuration.check_version(...,{2,0,0},{3,0,0})
 
 local main_label = dt.new_widget("label"){selectable = true, ellipsize = "middle", halign = "start"}
 
diff --git a/official/selection_to_pdf.lua b/official/selection_to_pdf.lua
index 2930e55..8444e8e 100644
--- a/official/selection_to_pdf.lua
+++ b/official/selection_to_pdf.lua
@@ -31,7 +31,7 @@ This plugin will add a new exporter that will allow you to generate the pdf file
 
 ]]
 local dt = require "darktable"
-dt.configuration.check_version(...,{2,0,0})
+dt.configuration.check_version(...,{2,0,0},{3,0,0})
 
 dt.preferences.register
    ("selection_to_pdf","Open with","string",