"The specified file temporary://fileXXXXXX could not be copied" warning If i open my local website there is a indication like this.


  The specified file temporary://filel17IDM could not be copied, because
  the destination directory is not properly configured. This may be
  caused by a problem with file or directory permissions. More
  information is available in the system log.


how to get out of this?
The temporary directory set under Admin > Configuration > File System is incorrect or does not have write permissions. Typically for local dev (on Linux/OSX machines) this path can simply be /tmp. On Windows, I believe it is C:\temp.

See: Configuring the temporary directory