Hello.
I mapped a drive on my windows 7 pc : https://mysite/egroupware/webdav.php and connected fine with my egroupware user / password.
I can copy files from there to my local pc.
When I try to copy a local file to my home directory in egroupware, I get this error:

The file is not open locally, and is a plain text file. It does not matter what file I attempt to transfer. I have also experimented on two other windows 7 pc’s to see if it the error was due to something on my computer. However, it does not matter where I try to transfer the file from as I get the same error.
Any suggestions?