I've successfully installed Flexifield, and created a new content type called "Links" that has three fields: Attachment, Title, and Link. Basically, a client wants to add either a link to a URL, or a link to a file that they want to upload. The title field is what they want the user to see on the link.

Some of the files being uploaded are pretty large (30 MB), and so I've installed SWFUpload to track the progress of the upload (can't use the uploadprogress PECL extension on the server).

The Attachment field is using file field, with the SWFUpload progress. If I go to create a Links piece of content, it works fine. However, if I use this flexi-field by adding it to another content type (in my case, an Event content type), it looks like it's uploading, then once it gets to about 95% of the way there, it says there was an error uploading the file, and the file isn't added to the node.

I even tried adding a test filefield in the SAME content type on its own, and it works, so the problem is definitely tied to Flexi-Field.

Any ideas?