Nah, I’ve had many issues with 0.9 AND 1.3 installed. After I uninstalled 0.9 all my problems were gone.
I have 1.2 and 1.3 both installed ( I can’t even uninstall 1.2 I believe) fyi.
The autodesk support says, thats a bigger problem (they didn’t describe it)…
The developer can’t handle it now, but they working on it…
They said, only a completely cleaned and reinstalled pc/software would be a solution…
Best to remove them in batches, or as a binary search of sorts (half at a time to narrow it down) if you have a lot. Checking your console log in Dynamo can also help.
I have been having this problem for a few weeks now. I’ve finally found the cause. It was an App. The one that caused the problem for me was SmartRevitDock.addin which is the Tools 4 BIM plugins from AGA-CAD
So I recently encountered the same problem in 2020 while using Revit 2019. Some of the signs I witnessed were:
Dynamo was launching really slowly.
File opening in dynamo got slow as well even on manual mode.
Upon the .dyn file opening up finally, all the dynamo nodes (including the OOTD nodes) had disappeared and only node connections were visible.
NOTE: I have not tried using such a corrupted script from Dynamo Player.
Solution: The same as mentioned by @mboyntonYS3J6
Just a day ago I had installed a bunch of new Revit add ins. In my case too the Add in named “Tools 4 BIM” turned out to be the culprit. So I removed the said Add in and it fixed the issue immediately.
Steps taken for fixing the issue:
Close the Revit software.
Open the folder at following link, type your Revit version at the end:
C:\ProgramData\Autodesk\Revit\Addins\2019
Cut the folder of the said Add in to any other location.