When using the Infinity SDK "Add System Roles Activities" Tool in Visual Studio to add workflow activities to a project in a solution that contains multiple projects, the codegen and .dll references folders get created in the wrong project.
To address this issue, drag the codegen and DLL reference folders to the correct Visual Studio project.
Steps to Duplicate
Create a new VB project (Workflow1) using the Integrated Workflow Project template
Save you Project
Click File > Add > New Project and add a second project to your existing on (Workflow2) using the Integrated Workflow Project template
Under the Workflow1 project, add a new item
Common Items > Workflow, select WCF Workflow Service (WFService1.xamlx)
Under the Workflow2 project, add a new item
Common Items > Workflow, select WCF Workflow Service (WFService2.xamlx)
Click Tools > Add System Role Activities
Search for and select a role and click OK
Note the codegen and references are added under the Workflow1 project and not Workflow2 which the tool was launched under