Symptoms

Attaching a file to a page in Confluence fails with the following error message:

As well as an error similar to the following the atlassian-confluence.log file.

2012-06-14 17:06:05,261 ERROR [http-1424-1] [confluence.plugins.dragdrop.UploadAction] execute Failed to save file.
 -- url: /plugins/drag-and-drop/upload.action | userName: admin | referer: http://example:8090/pages/editpage.action?pageId=1703940 | action: upload
java.lang.RuntimeException: Error creating temp file in folder: /example/attachments/ver003/205/236/1736705/190/203/1703940/1933317

Causes

1. This occurs when the operating system user running Confluence has inadequate write permissions to the Confluence home directory/attachments
2. There is not enough disk space available for the attachment to be written

Resolution

1. Ensure that the operating system user running Confluence has full read/write permissions to the Confluence home directory
2. Ensure that there is space available on the hard drive housing Confluence's home directory and that there are no space quotas set on the Confluence home directory/attachments folder preventing it from being written to