ClickOnce auto-detects references and it has a tendency to go a little "deep" at times. You can manually add the SF DLLs which are located in the C:\Program Files\Common Files\MicroFour\StrataFrame folder. Since you are using RBS you will need to include the Security DLL as well so there are 5 DLLs.MicroFour StrataFrame Base.dll
MicroFour StrataFrame Business.dll
MicroFour StrataFrame DBEngine.dll
MicroFour STrataFrame UI.dll
MicroFour StrataFrame Security.dll
If you are using DevExpress or Infragistics wrappers then you will need to include the respective DLL as well. Since you are trying to use DBEngine, SMO is required to be installed. SMO, or client tools, may not be installed and there is not an install specifically for SMO...so we created an MSM (Merge Module) that is included with the distribution to make this easier. You can find the SMO merge module in the C:\Program Files\MicroFour\StrataFrame\Distribution folder. Include the MSM in your setup and it will properly install SMO. As for the other DLLs, you can exclude what is not directly referenced.