Can't upload releases

I am having problems with uploading releases.

When I upload a file for a release I get these errors:

     * warning: md5_file(contentpack1-1.0.zip) [function.md5-file]: failed to open stream: No such file or directory in /home/siegethe/public_html/drupal/modules/contrib/project/release.inc on line 393.
    * warning: filemtime() [function.filemtime]: Stat failed for contentpack1-1.0.zip (errno=2 - No such file or directory) in /home/siegethe/public_html/drupal/modules/contrib/project/release.inc on line 394.
    * warning: filesize() [function.filesize]: Stat failed for contentpack1-1.0.zip (errno=2 - No such file or directory) in /home/siegethe/public_html/drupal/modules/contrib/project/release.inc on line 281. 

The release is created but filesize() throws an error when viewing it saying the file doesn't exist. And the link to the file actually points to the root. If I put the file there I no longer get any errors and I get a correct filesize, no md5 hash though.

I can get it to work if I do this:

It only works if I upload the files before creating the project.

1. I leave 'Release Directory' empty under administer->setting->project.
2. What I did was create a folder under 'files' called 'releases'.
3. I knew that my testproject would be using the shortname 'shadowlands' so I named the files 'shadowlands-1.0.zip' and 'shadowlands-1.1.zip'. Apparently the project module looks for files that use a 'shortnamn-version.fileformat' naming convention in this folder.
4. Now I create my project and call it Shadowlands, give it a fitting description and make sure that I use 'shadowlands' as shortname.

This doesn't really help me though since I need my members to be able to submit projects.

I use the default settings for project btw.

So is this a bug, is my setup faulty or what gives?

Thanks in advance.