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I tried your suggestion but it did not help. I now get the error message because the space does not have the child. In the following method myFrame is an instance variable I keep. Before adding a new object I would like to delete the old one (thats why I keep the instance var), yet it does not work ...
#actionLoadMesh
| gTransform p |
myFrame ifNotNil: [
p := harness activeSpace future hasChild: myFrame.
p wait.
p value ifFalse: [ self error: 'Something is horribly broken'. ]
].
" Figure out position. "
gTransform := harness avatar globalTransform.
myFrame := TFrame new.
myFrame transformBy: gTransform.
harness activeSpace future addChild: myFrame.
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Locked
