It is possible to experience unexpected file errors when trying to create a file if another process is simultaneously creating or removing the same file name. Setting ISOLATE_FILE_CREATES to 1 (on, true, yes) causes files to be created with temporary names and then renamed when they are fully formed. This prevents another process from interfering with the creation. This option is effective only with Vision, and has undefined effects when used with other file systems. We recommend that you use this option only if you are experiencing unexpected errors when trying to create a file.