[RoundCube Users] Problem uploading attachments

Hi,

I use RoundCube Webmail 0.1 Beta and have a problem uploading attachments: after choosing the file ("Browse...") and pressing on "Upload" the browser seems to load something but after that the attachment doesn't appear in the attachment column (the same thing happens also with small *.txt files).

I know that "file_uploads" has to be enabled like it says in the INSTALL document. phpinfo() says: file_uploads: On (Local Value) - On (Master Value). I also tested a PHP upload script on the server which worked without problems (the script uses $_FILES[] and the function move_uploaded_file()).

Thanks in advance and regards, Mark