One possibility that could have caused this was due to incorrectly internationalised code - that was fixed in the last BlenderBIM Add-on release. So if you update, there is the possibility is that it will be fixed.
There are other possibilities too, but you will need to share your file with me dion@thinkmoult.com (you can use https://send.firefox.com/) for me to debug.
Comments
One possibility that could have caused this was due to incorrectly internationalised code - that was fixed in the last BlenderBIM Add-on release. So if you update, there is the possibility is that it will be fixed.
There are other possibilities too, but you will need to share your file with me dion@thinkmoult.com (you can use https://send.firefox.com/) for me to debug.
@Moult always seek nodes by type instead of name, node names are not reliable at all as they may change with translations eg: Вивід матеріалу.
@stephen_l yes - the last release already has fixes that no longer seeks nodes by name - he is using an old version.