Return of Reckoning

hi all. I'm ready to kick some asses but when i click connect on ROR launcher i have an error occured.

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


My game get started but when i'm online, i can't do anything.

Un-check data.myp from read-only.

oh yeah !! Thank you very much !