Here is a generic error message, shown several times on each page :
Warning: file_put_contents(temporary://fil25BC.tmp): failed to open stream: "DrupalTemporaryStreamWrapper::stream_open" call failed in > file_unmanaged_save_data() (line 1935 of C:\inetpub\www-v2.3\includes\file.inc).
What can I do ?
EDIT I stopped struggling with that problem by changing my temporary directory on this server It was C:\Windows\temp (or C:\Windows\temp\drp-tmp) It is now sites/default/files/drp-tmp Note : on another server, the first setting is not giving warnings... Well, looks like I do not master that topic ! THANK YOU FOR your answers and attention