MISSING: Crystal Report 7 ActiveX Designer Run Time Library

We're working with a company to support a legacy system which uses VB6. We're trying to get the old environment up and running locally, but we are running into the following error:

MISSING: Crystal Report 7 ActiveX Designer Run Time Library

Location: D:\path\to\craxdrt.dll

We know Crystal Report 7 is ancient, but we need to try and find the missing DLL to get the application to run. Any idea where we might be able to download/purchase a version of this for local development?