Return of Reckoning

so i play RoR, and also i play ragnarok online , yes i play both because i need to be loged on rag to sell things, and while im selling i play war...
well when i open rag, war crashs, and if rag is opened the war dont open, with this error

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

is there a way i can fix and play both at same time? ty for any help

Both games use the gamebryo engine. Afaik the RoR launcher is injecting something in WARs data.myp. That may be the problem.

and is there a solution?

Try closing the WAR launcher after launching WAR.

tryied does not worked