Public bug reported:

As title states i'm converting my Java application from Sikuli 1.1.0 to
2.0.4.

In 1.1.0 Following procedure was:
1. Create image from sprites sheet.
2. Crop to the spot of interest
3. Take focused window as region
4. Find all matches in that region.

final Region program = App.focusedWindow();
Final Image windowElements = Image.create("window_panel_decorations");

Image titleTabStart = windowElements.getSub(12, 156, 18, 21);

final Iterator<Match> titleStarts = program.findAll(titleTabStart);

and then logic in iteration.

With 2.0.4 i'm getting following exception and errors:

1. [error] Finder2: makeMat: BufferedImage: type not supported: 0 --- please 
report this problem
2. Exception in thread "main" [error] Finder: __BufferedImage__: (18x21): 
conversion error --- find will fail
org.sikuli.script.SikuliXception: Finder::isValid: image to search is empty
        at org.sikuli.script.Finder$FindInput2.isValid(Finder.java:1240)
        at org.sikuli.script.Finder$Finder2.doFind(Finder.java:616)
        at org.sikuli.script.Finder$Finder2.find(Finder.java:582)
        at org.sikuli.script.Finder.findAll(Finder.java:334)
        at org.sikuli.script.Region.doFindAll(Region.java:2887)
        at org.sikuli.script.Region.access$300(Region.java:28)
        at org.sikuli.script.Region$RepeatableFindAll.run(Region.java:3026)
        at org.sikuli.script.Region$Repeatable.repeat(Region.java:2926)
        at org.sikuli.script.Region.findAll(Region.java:2445)

At current moment, i'm stuck with debuging with what has changed, that
old logic does not work any more. Any help appreciated.

** Affects: sikuli
     Importance: Medium
     Assignee: RaiMan (raimund-hocke)
         Status: In Progress

** Changed in: sikuli
       Status: New => In Progress

** Changed in: sikuli
   Importance: Undecided => Medium

** Changed in: sikuli
     Assignee: (unassigned) => RaiMan (raimund-hocke)

** Changed in: sikuli
    Milestone: None => 2.0.5

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https://bugs.launchpad.net/bugs/1882947

Title:
  [2.0.4] Image.getSub() does not work as expected from 1.1.0

Status in Sikuli:
  In Progress

Bug description:
  As title states i'm converting my Java application from Sikuli 1.1.0
  to 2.0.4.

  In 1.1.0 Following procedure was:
  1. Create image from sprites sheet.
  2. Crop to the spot of interest
  3. Take focused window as region
  4. Find all matches in that region.

  final Region program = App.focusedWindow();
  Final Image windowElements = Image.create("window_panel_decorations");

  Image titleTabStart = windowElements.getSub(12, 156, 18, 21);

  final Iterator<Match> titleStarts = program.findAll(titleTabStart);

  and then logic in iteration.

  With 2.0.4 i'm getting following exception and errors:

  1. [error] Finder2: makeMat: BufferedImage: type not supported: 0 --- please 
report this problem
  2. Exception in thread "main" [error] Finder: __BufferedImage__: (18x21): 
conversion error --- find will fail
  org.sikuli.script.SikuliXception: Finder::isValid: image to search is empty
        at org.sikuli.script.Finder$FindInput2.isValid(Finder.java:1240)
        at org.sikuli.script.Finder$Finder2.doFind(Finder.java:616)
        at org.sikuli.script.Finder$Finder2.find(Finder.java:582)
        at org.sikuli.script.Finder.findAll(Finder.java:334)
        at org.sikuli.script.Region.doFindAll(Region.java:2887)
        at org.sikuli.script.Region.access$300(Region.java:28)
        at org.sikuli.script.Region$RepeatableFindAll.run(Region.java:3026)
        at org.sikuli.script.Region$Repeatable.repeat(Region.java:2926)
        at org.sikuli.script.Region.findAll(Region.java:2445)

  At current moment, i'm stuck with debuging with what has changed, that
  old logic does not work any more. Any help appreciated.

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