Hello,
I have the following problem:
my Dynamo script works until I have run the script several times. After that, the script no longer places families.
Further in the script, the families in the list are displayed with the family name and type, but in Revit, the families are not present.
Dynamo does place the families, but the elements are displayed as Empty. Sometimes Revit also freezes at 1% committing transaction.
it also happems when running from the dynamo player
Has anyone encountered this issue before and found a solution? Thank you in advance.
thanks for your reaction
Where should I position them? I’ve attempted it without any success.
Are you able to see the families it placed in your model?
I’d start with freezing everything after instanceByPoint, and make sure that dynamo correctly places all your families, then we can troubleshoot further 
thanks for your reaction
No the families are not vissible in revit
Can you select them by Id? My intuition is this is a binding issue or a corruption of the Revit model. Best to do a full project audit and clean up just incase.
Yes i can select them by id,i wil try the audit for the model