unetbootin-eeeubuntu-windows-276.exe is a custom version of unetbootin-windows. The current version at the link I gave is 3.56, interface has been updated, and many bugs have been fixed, and is not a custom ported version.
Give it a shot and see if that fixes the issue for you, also there are archived version on the web page, you may want to try an older version of the non (eeebuntu) custom version.
Give it a shot and see if that fixes the issue for you, also there are archived version on the web page, you may want to try an older version of the non (eeebuntu) custom version.