Try to install MS Visual C++ 2008 Redistributable Package.If you install the library did not help, write to the author on program page or write to e-mail jenyay.ilin@gmail.com with a full error text.
Keeping notes in a tree - the main feature, for which the program was conceived. This does not mean that someday I will not do add the setting for the choice of ways to store your notes, but soon it'll hardly.
There are thought to make a separate page type format RichTextFormat with the visual editor. Do not rule out the possibility that there will be a visual editor for HTML-pages. But on any dates I can not yet speak.