Error message - classextension.rb

[harnstein]

Hi there,

OT: first i'd like to say "thank you" to hpnisse for your effort on helping me with my last SP problem and sorry that i didn't answer the last post- no good manners

i still could not get it to work and had to continue on some other project...

ON TOPIC:

every time i press the "play" button i get the following error-message: see attachment

anybody knows the solution?

regards, h_

---

[CPhillips]

At first glance it looks like it might be a conflict with another plugin. Could you let me know which other ones you have installed.

[harnstein]

first, happy new year!

i've been off till yesterday, visiting my hometown, celebrating, holidays..

thanks for your reply- here they are

#extrusionToolbar.rb
._crease.gif
._extrude.gif
._knife.gif
._proxy.gif
._smooth.gif
._subdivide.gif
._subsmooth.rbs
._subsmooth_load.rb
2DTools
3DxSketchUp
BZ_Dir
CD_ICONS
clf_shape_bender
clf_simple_loft
CURVILOFT_Dir_10
DEFPARAM_Dir
Examples
FixReversedFaceMaterials
FREDOSCALE_Dir_20
Icons
JPP_Dir
LIBFREDO6_Dir_32
LIBFREDO6_Dir_33
LIBFREDO6_Dir_35
mover2
mover_extensions
OBJImport
Ocean
Projection
protrude
ROUNDCORNER_Dir_20
ROUNDCORNER_Dir_21
SketchyPhysics3
skin
SoapSkinBubble
Subsmooth
TIGtools
tooling
TOS_Dir_16
TT_Lib
TT_Lib2
Utilities
2D#.rb
3DxSketchUp.rb
ArchetypesStairMaker.rb
arraysum.rb
bezierspline.rb
BZ__BSplineU.rb
BZ__CubicBezier.rb
cd_architect.rb
cd_architect_extension.rb
cd_draw_extension_m.rb
cd_draw_m.rb
cd_power_extension_m.rb
cd_power_m.rb
cd_power_n.rb
cd_standard.rb
cd_zelect.rb
cd_zelect_extension.rb
centerpoint.rb
Chamfer_Along_Path.rb
ClassExtensions.rb
cleanup_model.rb
clf_shape_bender_loader.rb
clf_simple_loft_loader.rb
config-thumb.jpg
crease.gif
cubicpanoout.rb
deBabelizer.rb
delauney2.rb
EntsGetAtt.rb
eq_grapher.rb
examples.rb
extensions.rb
extrude.gif
ExtrudeAlongPath.rb
extrudeEdgesByEdges.rb
extrudeEdgesByFace.rb
extrudeEdgesByFaces.rb
extrudeEdgesByLathe.rb
extrudeEdgesByLoft.rb
extrudeEdgesByRails.rb
extrudeEdgesByRailsByFace.rb
extrudeEdgesByRailsToLattice.rb
extrudeEdgesByVector.rb
FAK.rb
FixReversedFaceMaterials.rb
follow_this1.rb
FredoScale_ZH.lang
GetCentroid.rb
getMaterials.rb
heightfield_gen_v6.rb
jf_unfoldtool.rb
jointpushpull.rb
knife.gif
Latticeizer.rb
LibFredo6.rb
LibTraductor.def
LibTraductor.rb
lines2tubes.rb
lsystem.rb
makefaces11.rb
mesh_additions.rb
Mirror_31.rb
mover.rb
OBJImport.rbs
ocean_extension.rb
offset.rb
parametric.rb
pathcopy.rb
PipeAlongPath.rb
progressbar.rb
projection_extension.rb
proxy.gif
RubyWinFunc.so
SectionCutFace.rb
Sketchup.rb
SketchyFFD.rb
skin.rb
smooth.gif
SoapSkinBubbleTools.rb
stair.rb
subdivide.gif
subsmooth.rbs
subsmooth_load.rb
Thumbs.db
tooling.rb
tt_0000_menu.rb
tt_bitmap2mesh.rb
tt_cleanup.rb
tt_material_tools.rb
tt_plan_tools.rb
tt_uv_toolkit.rb
utilities.rb
vector.flat_angle.rb
vfs.rb
weld.rb
windowizer.rb
ZLoader__Curviloft.rb
ZLoader__FredoScale.rb
ZLoader__OnSurface.rb
ZLoader__RoundCorner.rbv

maybe (or surely) they are a bit messy, i always wanted to clean up a bit.. soon..

maybe you'll find something in there!

greets

_h

[CPhillips]

Ouch. Thats a lot to test. Can you send me a model that fails and I'll take a look.

[TIG]

You can edit ../Plugins/SketchyPhysics3/ClassExtensions.rb with a plain-text editor [Notepad[++].exe or similar]... around line #59

class Sketchup;;Group
    def definition # make it so you can use group.definition
	return(entities[0].parent)
    end   
end

change it to read

class Sketchup;;Group
  if not Sketchup;;Group.method_defined?(;definition)
    def definition() # make it so you can use group.definition
	return(self.entities.parent)
    end
  end#if    
end

This code is used to set the group.definition method not available directly in the API...
In its current form it is looking for a parent of the first entity [0] in the group's entities - if there is no first [0] entity in the entities it fails because 'nil' has no parent.
The suggested change explicitly refers to the group's entities AND even if the entities is empty it returns the parent and thereby the definition...
NOTE: an even safer 'method' is this

class Sketchup;;Group
     # Some times the 'group.entities.parent' refer to the wrong definition. 
     # This method checks for this error and locates the correct parent definition.
     if not Sketchup;;Group.method_defined?(;definition)
       def definition()
          if self.entities.parent.instances.include?(self)
             return self.entities.parent
          else
             Sketchup.active_model.definitions.each { |definition|
                next if not definition.group?
                return definition if definition.instances.include?(self)
             }
          end
          return nil # Should never happen.
       end
     end#if
    end

Note how the suggested code changes test to see if the group.definition method is already set [by another tool or perhaps even SketchUp in a yet to come API upgrade] and it doesn't change it if it is...
IF you have other scripts that are also defining group.definition [do a 'grep' search through Plugins for "class Sketchup::Group"] it might also be best for you to substitute the same class/method definition and tests for all of them

[harnstein]

um, computer's secrets..

i uninstalled / reinstalled SP several times- now, as i get all these helpful advices, i reinstalled SP once more, and it's working again after all..! tsss. havent't changed anything.

so i, you, we cannot figure out what has been the problem.

thanks for your effort, maybe i get that error again one day , then i will start here again.

now i can at last check out a skp-SP-file which i had some problems with and got helped here-

an this file i posted in july, as i remember..

wish you a nice day!

[CPhillips]

I am glad its working. but I would have liked to figure out the conflict.

I wonder if it might have to do with the order plugins are installed....

[i74s00]

exactly same error i geting after pressing "START"... So after whole day of installing and uninstalling i find that trouble was "clf_simple_loft_01b" plugin. (Error on SU6 and 8 and all SP versions, for me ....(WIN XP,32)) Hope it helps for someone.