# blender script startup fail

I wrote an exporter script and put the files into ~/.config/blender/x.xx/scripts/addons/export However, when I check the User Preferences I cannot find my script in the Import-Export section, so I could enable it. If I load the script manually, however, an export entry appears under the Export menu. My current goal is to simply have it show up in the User Preferences, the code is pretty much copy&pasted from other scripts.

__init__.py:

bl_info = {
"name": "SCN format (.scn)",
"author": "",
"version": (0, 0, 1),
"blender": (2, 77, 0),
"location": "File > Import-Export > scn (.scn)",
"description": "Export SCN",
"warning": "",
"wiki_url": "",
"support": 'NONE',
"category": "Import-Export"
}

if "bpy" in locals():
import importlib
else:
import bpy

from bpy.props import (
BoolProperty,
FloatProperty,
StringProperty,
EnumProperty,
)

from bpy_extras.io_utils import (
ImportHelper,
ExportHelper,
orientation_helper_factory,
path_reference_mode,
axis_conversion,
)

IOOBJOrientationHelper = orientation_helper_factory("IOOBJOrientationHelper", axis_forward='-Z', axis_up='Y')

class ExportSCN(bpy.types.Operator, ExportHelper, IOOBJOrientationHelper):
"""Save a SCN File"""

bl_idname = "export_scene.scn"
bl_label = 'Export SCN'
bl_options = {'PRESET'}

filename_ext = ".scn"
filter_glob = StringProperty(
default="*.scn",
options={'HIDDEN'},
)

output_format = EnumProperty(
name="Output Format",
items=(
("CBOR", "CBOR", "Export as CBOR"),
("JSON", "JSON", "Export as JSON"),
),
default="CBOR"
)

path_mode = path_reference_mode

check_extension = True

def draw(self, context):
layout = self.layout

row = layout.row(align=True)
row.prop(self, "output_format")

def execute(self, context):
return "FINISHED"

self.layout.operator(ExportSCN.bl_idname, text="SCN (.scn)")

def register():
bpy.utils.register_module(__name__)

def unregister():
bpy.utils.unregister_module(__name__)

if __name__ == "__main__":
register()

• Did you save the user settings after you activated the addon? gamefromscratch.com/image.axd?picture=image_thumb_2524.png Jun 7 '17 at 11:24
• i can't activate it, it does not show up, there's nothing in the console, if I load from the command line shell. Jun 7 '17 at 11:28
• I see. Sounds like you're missing some of the required stuff for registering addons. Please have a look at the tutorial, and if you can post the script's code it could help debug the issue: docs.blender.org/api/blender_python_api_current/… Jun 7 '17 at 11:31
• My pleasure, here's the code, pretty much copy&pasted, nothing special. Jun 7 '17 at 11:55

If you come across a problem like this, the solution might be not to copy&paste from an existing exporter script, but to literally copy the directory of some such exporter into .config/blender/x.xx/scripts/addons and work on it from there. This seems to work, but the root cause was blender getting freaked out by my bl_info line. Specifically:

bl_info = {
...
"support": 'NONE',
...
}


freaked it out and omitting the line solved the issue.