Element.SetParameterByName Warning: Internal error, please report: Dereferencing a non-pointer

Warning: Internal error, please report: Dereferencing a non-pointer - I would upload the files but I’m a new user so it won’t let me.

Does anyone know how I can fix this??

check your element input list, make sure there is no null

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@daninet thanks for commenting. I have included links to the files. I’m relatively new to Dynamo, so if you could check it, that would be brilliant.

Dynamo File
Excel File

Revit File

@daninet this is the door I’m using

The input element was disconnected from the next node. There was null input, that’s why you got the error.

After this it run without problem.

@daninet It ran once I reconnected them, but now it has created all my new doors, but they are all the size of the last door in the excel file. Any idea why? Or how to fix it?

Post a camera export of your graph please.

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I’m a new user, so it doesn’t let me post pictures or attachments. I did solve the problem though. I didn’t know that I had to set the level correctly to get the input values from excel. Thanks for your help.

Check how list levels are working.


Could you please introduce me about that problem ?

Youre node list all views gives a null thats is why you get a warning. From what package is that node?

HI Nico,
That problem has been done . Thanks !

Make sure there are no null values when you FilterByBookMask. If there are null values, use the Object.IsNull and then FilterByBoolMask.

I believe I have come up to the same issue. Can you help why the Parameter.Value can not read Type parameter value in Furniture Family?

I have found a solution myself. Thanks. Below the missing part to get Type parameter values out.

guys how come my clash point in naviswork can’t set as 1 column …i am trying to make the dynamo from u yoube but problem is my clash point separate as 3 column x,y,z …instead it should be as 1 column only…

because my clash point sets as X,Y, Z separate column i figure may be i should set the graph like that…?