I may be testing the 'there's no such thing as a stupid question' expression but here goes...

This morning I've imported an automation script but Visual Studio isn't referencing the DataMinerSolutions.dll. I have loaded it into the solution correctly and it's referenced in the script. There's no import errors/invalid or dll not found errors etc.  I'm not sure why I can't use it. I'd appreciate any advice, it doesn't seem to have happened to anyone before when searching through VS/stackoverflow communities so I expect it's something obvious!

I should mention it's fine on the agent, this is just editing on my local machine connected with DIS.

Thanks!