corefoundation

I have tried to create a directory with this code: B4X: File.MakeDir(File.DirLibrary,"caches") but i get this error: B4X: Error occurred on line: 194 (b4xp_mycontent) Failed to create directory: Error Domain=NSCocoaErrorDomain Code=4 "The file “caches” doesn’t exist."...

Hello, on B4A this code works, but on B4I i get this error: B4X: Copying updated assets files (2) Application_Start Application_Active Error occurred on line: 276 (B4XPagesManager) Expected: UIView, object type: B4IViewController Stack Trace: ( CoreFoundation __exceptionPreprocess + 350...