아래 메일 참조
we've released SigViewer 0.5.1 - it is mainly a bug fix release (which is good), and I strongly recommend to update to this version. In previous version, there was a serious bug where signals could be distorted - this is fixed in 0.5.1. Also, drag and drop works again.
I know that there are still many bugs and tons of things we could implement to improve SigViewer. Please report all bugs and wishes on SigViewer's bug tracker at http://sourceforge.net/tracker/?group_id=318273 (you can find this information also at http://sigviewer.sourceforge.net/support.html).
As usual, you can download 0.5.1 at http://sigviewer.sourceforge.net/download.html.