Hi there,
I just noticed that the arduino IDE (latest version) seems to have a flaw (or maybe the JAVA behind it:
When the path of the .ino-file has an Umlaut (ä, ö, ü) in it, the file will open correctly, but when I compile the sketch, the IDE Claims for every void "blablablavoid was not declared in this scope".
I know this might be of no concern to a lot of Folks, but for Germans like me, you sometimes have to use Umlaute.