So, I received a packaged workflow from an end user. I updated their workflow to allow for a page break in their pdf output, simple fix. When I sent the package back for them to replicate the changes, they receive an error from a join multiple tool that is not present on our server I am working on.
On my machine, the workflow runs just fine with zero errors and on hers, she receives this error:

This is the results page from the server I am running the workflow from:
