Setting the parent of a transform which resides in a prefab is disabled to prevent data corruption. WHY???

Question

im using t$$anonymous$$s script to instantiate a game object. and im trying to make it a c$$anonymous$$ld of another game object named: level

 var brick : Transform;
 function Start () {
                 Instantiate(brick, Vector3 (0, 0, 10), Quaternion.identity);
                 brick.parent = transform;
                 }

I have attached the script to the game object : level.

but im getting t$$anonymous$$s error... "Setting the parent of a transform w$$anonymous$$ch resides in a prefab is disabled to prevent data corruption"

how to solve t$$anonymous$$s?

Answer 1

Best Answer

Answer by Shrandis · Nov 02, 2012 at 07:51 AM

 Instantiate(brick, Vector3 (0, 0, 10), Quaternion.identity);
 brick.parent = transform;

You are trying to set the parent of your brick PREFAB, not the actual brick you instantiated.

 GameObject myBrick = Instantiate(brick, Vector3 (0, 0, 10), Quaternion.identity) as GameObject;
 myBrick.transform.parent = transform;

Again, "brick" is your prefab, myBrick is the brick you instantiate here so you need to set it as c$$anonymous$$ld, NOT the prefab.

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zico_mahilary · Nov 02, 2012 at 09:35 AM 1

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awesome!!! thanks a lot.. cheers!

Bunny83 · Nov 02, 2012 at 10:20 AM 1

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The code in the question seems to be UnityScript. Your answer is (kind of C#). It's ok to post a C# solution, but it should be correct ;) "new Vector3(0, 0, 10)". Also the prefab was a Transform reference so the returned reference will also reference the Transform component of the created object. When you "as-cast" it to GameObject (which doesn't work) it will be null.

So either do this

 Transform brickPrefab;
 //[...]
 Transform myBrick = Instantiate(brickPrefab, new Vector3 (0, 0, 10), Quaternion.identity) as Transform;
 myBrick.parent = transform;

or

 Transform myBrick = (Transform)Instantiate(brickPrefab, new Vector3 (0, 0, 10), Quaternion.identity);
 myBrick.parent = transform;

in C#.

Nalincah · May 20, 2017 at 08:19 PM 0

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It doesn't work in both directions.

 GameObject foo = Instantiate(extra1, Vector3.zero, Quaternion.identity); 
 foo.transform.parent = otherPrefabGameObject;

You can neither set the parent of a prefab, nor set a prefab as a level. Both actions triggers the message "Setting the parent of a transform which resides in a prefab is disabled to prevent data corruption.". The Reason: A prefab is a file on your disk, and should never be modified by your Script

AibNihan · Feb 18, 2018 at 12:34 AM 0

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Thank you so much You Are Great It's Solve My Problem :)

Answer 2

Answer by Cinnax · Jan 27, 2013 at 04:11 PM

I know t$$anonymous$$s is an older post, but the error "Setting the parent of a transform w$$anonymous$$ch resides in a prefab is disabled to prevent data corruption" indicates that you are attempting to parent a prefab. You cannot do so. When you instantiate an object from a prefab, you need to refer to the actual GameObject that was instantiated, not the prefab w$$anonymous$$ch the GameObject is cloned.

private GameObject objectPrefab; private GameObject prefabInstantiation; prefabInstantiation = Instantiate(objectPrefab, position, rotation) as GameObject; prefabInstantiation.transform.parent =

As you can see, I am not referring to the actual prefab, but the object w$$anonymous$$ch was instantiated. Then I am setting the instantiated objects parent as some other object.

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Answer 3

Answer by Bryan-Legend · May 13, 2014 at 09:58 PM

T$$anonymous$$s error was happening to me in Unity 4.3.1 for no good reason.

Restarting Unity made the problem go away.

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1d · Apr 26, 2015 at 09:01 PM 0

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This was the same at me.

tpainton · Oct 31, 2015 at 05:32 PM -1

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Yes, I feel there is a bug here.

 public void DisplayDown (List<HackingTarget> targets, Vector3 origin) {
 
         foreach (HackingTarget target in targets) {
             GameObject entry = (GameObject)Instantiate (textMesh, origin, Quaternion.identity);
             // Add the appropriate listener script.  
             entry.AddComponent<ScanClickLink> ();
             ScanClickLink clickscript = entry.GetComponent<ScanClickLink> ();
             clickscript.Target = target;
             entry.transform.parent = gameObject.transform;  // ERROR!!!
             entry.transform.localPosition = origin;
             TextMeshPro tMesh = entry.GetComponent <TextMeshPro> ();
             tMesh.text = BuildTargetDesc (target);
             tMesh.ForceMeshUpdate ();
             float newY = tMesh.mesh.bounds.center.y + tMesh.mesh.bounds.size.y + .2f;
             Vector3 temp = new Vector3 (0, newY, 0);
             origin -= temp;
         }
     }

The line "entry.transform.parent = gameObject.transform;" throws the error. Clearly entry is NOT the prefab. I have been trying to fix this issue for a week now. Restarting Unity does not fix the problem.

Bunny83 tpainton · Oct 31, 2015 at 07:52 PM 0

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This is not an answer. You should have posted a seperate question. Also are you sure you get the exact same error? Does this happen at runtime?

On what object is this script attached to and how do you call "DisplayDown"? Maybe you call this method on a prefab so "gameObject.transform" actually references a prefab?

Again, post a question and not an answer.

tpainton tpainton · Nov 01, 2015 at 03:23 PM 0

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Sorry, 10 years of stackoverflow.com moderaters telling me not to repeat questions and "This has already been asked". My problem seems to be the exact same. The question thus far, "restart Unity" isn't an answer.

So, from now on, if I See 3 questions that are similar to mine, all unanswered, the appropriate thing to do is post the question again?

I'll just do that now. If I don't get a response, I guess I'll be forced to come back here. Again, sorry. Probably didn't deserve a downvote. A simple notification that repetition is preferred would suffice.

reposted here http://answers.unity3d.com/questions/1091642/another-setting-the-parent-of-a-transform-which-re.html

Bunny83 tpainton · Nov 01, 2015 at 04:20 PM 0

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It seems to be the same? you're doing something totally different than what the OP does in his code. Also show me one SO moderator that suggest to ask a question in an answer. If it's a small follow up question it's ok to post a comment but never an answer.

"restart Unity" is almost never an answer. In some rare situations it might help. That's why that answer only has one upvote while the other two answers have 4 and 6 votes.

Well, you got the downvote because the answer you've posted doesn't answer the question.

tpainton · Nov 01, 2015 at 05:40 PM 0

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Yea, well I just converted my answer to a comment and flushed your down vote :) That's a nice feature.

tiagorpg · Mar 28, 2018 at 02:08 PM 0

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it is happening to me, but i have no idea where is it using a parent of a prefab, that error does not show the line were the problem occurs

Answer 4

Answer by BrandStone · Dec 17, 2018 at 08:55 PM

T$$anonymous$$s problem appears when you try to instantiate the gameobject contained by another class:

 public class MyScript : MonoBehaviour {
     public Transform myTransform;

     void Awake () {
         GameObject myInstance = GameObject.Instantiate(myTransform.gameObject);
     }
 }

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Answer 5

Answer by gislersoft · Mar 08, 2021 at 10:03 PM

If you need to preserve original transformations use:

 GameObject prefab = Resources.Load<GameObject>(pathToPrefab);
 GameObject object = Instantiate(prefab) as GameObject;
 object.transform.SetParent(parentObject.transform);
 
 // Preserve original transformations
 object.transform.localPosition = prefab.transform.localPosition;
 object.transform.localRotation = prefab.transform.localRotation;
 object.transform.localScale = prefab.transform.localScale;

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florinel2102 · Mar 28, 2021 at 02:06 PM 0

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Thanks , I thought after Resources.load is finished the gameobject is instantiated .

Setting the parent of a transform which resides in a prefab is disabled to prevent data corruption. WHY???

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