Native import crashing

[Hoeze]

Hi, I just tried to native import an IPT file to FreeCAD, but I get some errors:

17:46:01  Reading: C:\Users\user\Documents\Inventor\Mignon Scale\Load cell.ipt
17:46:02          ... can't create dimension constraint between  (0079): Line2D - (0,7.52) - (1.272,7.52) and (0061): Point2D - (0.636,6.96) - not supported by FreeCAD!
17:46:02          ... skipped distance dimension - can't find geometry for (0067): Point2D - (0.636,0.56) (entity2: 5,None)!
17:46:02          ... can't create dimension constraint between  (00DA): Line2D - (7.52,1.272) - (7.52,0) and (00CC): Point2D - (4.17,0.636) - not supported by FreeCAD!
17:46:02          ... can't create dimension constraint between  (00C2): Line2D - (0,0) - (0,1.272) and (00CF): Point2D - (3.35,0.636) - not supported by FreeCAD!
17:46:02  Error in creating (0010): Feature - Body: object is not allowed
17:46:02  Traceback (most recent call last):
  File "C:\Users\user\AppData\Roaming\FreeCAD\v1-1\Mod\InventorLoader\.\importerFreeCAD.py", line 821, in getGeometry
    importObject(node)
  File "C:\Users\user\AppData\Roaming\FreeCAD\v1-1\Mod\InventorLoader\.\importerFreeCAD.py", line 4057, in Create_Feature
    createFxObj(fxNode)
  File "C:\Users\user\AppData\Roaming\FreeCAD\v1-1\Mod\InventorLoader\.\importerFreeCAD.py", line 2456, in Create_FxExtrude
    padGeo = self.createFxExtrude_Operation(extrudeNode, sectionNode, name, '_Cut', 'Cut')
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\user\AppData\Roaming\FreeCAD\v1-1\Mod\InventorLoader\.\importerFreeCAD.py", line 2356, in createFxExtrude_Operation
    tool = self.Create_FxExtrude_New(padNode, sectionNode, name + nameExtension)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\user\AppData\Roaming\FreeCAD\v1-1\Mod\InventorLoader\.\importerFreeCAD.py", line 2316, in Create_FxExtrude_New
    pad = newObject('Part::Extrusion', name)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\user\AppData\Roaming\FreeCAD\v1-1\Mod\InventorLoader\.\importerFreeCAD.py", line 169, in newObject
    activeBody.addObject(obj)
ValueError: Body: object is not allowed

17:46:02  Error in creating (0011): Feature - Body: object is not allowed
17:46:02  Traceback (most recent call last):
  File "C:\Users\user\AppData\Roaming\FreeCAD\v1-1\Mod\InventorLoader\.\importerFreeCAD.py", line 821, in getGeometry
    importObject(node)
  File "C:\Users\user\AppData\Roaming\FreeCAD\v1-1\Mod\InventorLoader\.\importerFreeCAD.py", line 4057, in Create_Feature
    createFxObj(fxNode)
  File "C:\Users\user\AppData\Roaming\FreeCAD\v1-1\Mod\InventorLoader\.\importerFreeCAD.py", line 2458, in Create_FxExtrude
    padGeo = self.Create_FxExtrude_New(extrudeNode, sectionNode, name)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\user\AppData\Roaming\FreeCAD\v1-1\Mod\InventorLoader\.\importerFreeCAD.py", line 2316, in Create_FxExtrude_New
    pad = newObject('Part::Extrusion', name)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\user\AppData\Roaming\FreeCAD\v1-1\Mod\InventorLoader\.\importerFreeCAD.py", line 169, in newObject
    activeBody.addObject(obj)
ValueError: Body: object is not allowed

17:46:02  Extrusion2_Cut: No object linked
17:46:02  Extrusion3: No object linked
17:46:02  Error in creating (0012): Feature - Body: object is not allowed
17:46:02  Traceback (most recent call last):
  File "C:\Users\user\AppData\Roaming\FreeCAD\v1-1\Mod\InventorLoader\.\importerFreeCAD.py", line 821, in getGeometry
    importObject(node)
  File "C:\Users\user\AppData\Roaming\FreeCAD\v1-1\Mod\InventorLoader\.\importerFreeCAD.py", line 4057, in Create_Feature
    createFxObj(fxNode)
  File "C:\Users\user\AppData\Roaming\FreeCAD\v1-1\Mod\InventorLoader\.\importerFreeCAD.py", line 2458, in Create_FxExtrude
    padGeo = self.Create_FxExtrude_New(extrudeNode, sectionNode, name)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\user\AppData\Roaming\FreeCAD\v1-1\Mod\InventorLoader\.\importerFreeCAD.py", line 2316, in Create_FxExtrude_New
    pad = newObject('Part::Extrusion', name)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\user\AppData\Roaming\FreeCAD\v1-1\Mod\InventorLoader\.\importerFreeCAD.py", line 169, in newObject
    activeBody.addObject(obj)
ValueError: Body: object is not allowed

17:46:02  Extrusion2_Cut: No object linked
17:46:02  Extrusion3: No object linked
17:46:02  Extrusion4: No object linked

Importing via STEP conversion works, but the sketches have a lot of missing constraints.
Most importantly, the individual lines are not connected any more.
Also, projected geometry is freely moving now.