Sometimes, it is really tough to work on Windows. Because of sticking to old habits, errors occur and you have to find them. Today, I was using Maven for a project. Suddenly, the download of an Ant jar stopped with an exception. The reason was a whitespace in the path:

C:\Dokumente und Einstellungen\…

To correct it, I had to change the maven path in the settings to good old DOS style:

C:\Dokume~1\…

This is so annoying. The error is documented for AppFuse here and here.