How to cause sourceforge.net to offer the most recent file to download

If you upload two files with different version number within one day(?) the green button shows the older version i.e. yesterday I uploaded
- JDecisiontable_version_1.1.2.zip
- JDecisiontable_version_1.1.3.zip

And it offered JDecisiontable_version_1.1.2.zip in the green button. Today I uploaded same file - JDecisiontable_version_1.1.3.zip - again. Now this file appears in the green button.

Furthermore I observed that any executable over an zip file. I.e. after uploading both files yesterday the file JDecisiontable_1.0.2.jar disappeared after removing it fron Files area. I replaced it by a zip file containing this file and belonging help files.