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AutoCAD Based 3D Modeling (Ribbon/Toolbar/Location)
Description:
When raising to 3D, you get the following error;
Error inserting to block table HEAD#/HH## to head dictionary
Unsure
While this error cannot be recreated inhouse, it's likely due to a sprinkler head being defined while the drawing was in 3D/Model view.
It's recommended the drawing be set to 2D and redefine the block in question using the SS/SSP command.
Then close the drawing and re-open it.
If the error persists, turn on and unlock the ACC1 layer, find the blue box which corresponds to the block noted (HEAD2 in the error above), then delete it.
Then define the block again.