Revit crashes when loading a script with archi-lab and Clockwork nodes

Michael,

I did a full uninstall/reinstall, cleared the Dynamo AppData folder, and installed just the Clockwork package. I was able to load just fine. However, as soon as I start adding other packages, crashes start to occur again, but now loading scripts do not cause a crash 100% of the time. It’s kind of random now.
With Clockwork installed, the following lines appear in the Dynamo log files each time I load, crash or no crash. But when a crash does occur, these are the last few lines from the dynamo log file:

2018-10-17 15:40:31Z : Loading node definition for “Dynamo.CustomNodeInfo” from: H:\Support\Dynamo\Packages\Clockwork for Dynamo 2.x\dyf\Application.Version.dyf
2018-10-17 15:40:32Z : while loading node Application.Version we could not find a port for the retrunkey fullVersion at index 4
2018-10-17 15:40:32Z : Active view is now HOME VIEW

When I tried to install archi-lab again, Revit and dynamo immediately crashed as soon as the package was installed, and this is what the log file looked like:

2018-10-17 15:47:53Z : Saving C:\Users\sshowalter\AppData\Roaming\Dynamo\Dynamo Revit\backup\Center Room and Room Tags.dyn …
2018-10-17 15:47:53Z : Backup file is saved: C:\Users\sshowalter\AppData\Roaming\Dynamo\Dynamo Revit\backup\Center Room and Room Tags.dyn
2018-10-17 15:48:53Z : Saving C:\Users\sshowalter\AppData\Roaming\Dynamo\Dynamo Revit\backup\Center Room and Room Tags.dyn …
2018-10-17 15:48:53Z : Backup file is saved: C:\Users\sshowalter\AppData\Roaming\Dynamo\Dynamo Revit\backup\Center Room and Room Tags.dyn
2018-10-17 15:49:02Z : System.InvalidOperationException:
2018-10-17 15:49:02Z : There already exists an AlsoKnownAs mapping for Fill Pattern Targets.
2018-10-17 15:49:02Z :

Please let me know if there is any other information I can provide.