How to Fix Dynamo Missing Packages & Dependencies

You can use Dynamo scripts in your Revit projects even if you don't have any experience with Dynamo. That can be done directly in Dynamo itself or by using the Dynamo player.

However, users often struggle with an extremely annoying problem: missing packages & dependencies.

When running a script in the Dynamo Player, you might get these warnings:

In older versions of Revit, the warnings may not be as explicit, but the script still does not work. That means you must fix package and dependency issues.

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How to Install Missing Packages

If you are using the Dynamo Player, click on the pencil icon to modify the script in Dynamo. Else, you can also open Dynamo first and then open the script.

On the right side of your screen, you should see the Workspace References. You can see that there are two packages with a red X, meaning they are not currently installed.

If you don't see the workspace references, go to the Extensions menu to open it.

Then, click on one of the packages with the red X. Click on "Install Specified Version".

You will then see multiple dialog boxes show up. Click OK or YES to all of them.

Alright, the first package has been installed! Repeat the same steps for all other packages with a red X.

Now let's talk about dependencies. One of these custom packages is dependent on another package called DynamoIronPython. It will be added to the list of packages. You also need to install this one.

When you are done, all packages should have a green check next to them. Everything is set!

When you run the Dynamo script again on your Revit project, everything should be fine.

All Users Must Follow These Steps

Custom packages are installed on a local machine. That means all users who want to use a specific Dynamo script must follow all of these steps.

Additionally, custom packages and dependencies are installed according to the Revit version. That means if you've installed these packages in Revit 2024, you'll need to repeat the steps inside Revit 2025 and so on.

However, you only need to install the same package once. For example, you may have multiple scripts that use the Rhythm package. Once it's installed, you won't have to repeat the same steps for the other scripts.

That's it! Good luck.