Error while launching, please help :]

[ClockworkMishap]

Data.myp:
System.Exception: You need to stop application currently using the following file: data.myp
at MYPHandler.MYPHandler.WriteFileToArchive(FileInArchive archFile, MemoryStream MS)
at MYPHandler.MYPHandler.ReplaceFile(FileInArchive archFile, FileStream newFile)
at RoRLauncher.Client.UpdateWarData()

That's the error I get. I also get a secondary error from windows saying that it cannot run the game directly and needs the patcher to run or something?

EDIT: Idk if this has anything to do with it but I downloaded the game through steam and I'm running on windows 10.

[wargrimnir]

Sure does. Get rid of the existing WAR folder and start over following our install directions.