Project is dead. Now the license was changed to WTFPL (Do What the Fuck You Want to Public License) version 2.
This license has only one rule:
0. You just DO WHAT THE FUCK YOU WANT TO.
The version 0.7 is out and it's now full compatible to windows vista and 7.
For this version you need the NET framework 4.0.
15 Month are over and now the project is present on the facebook page.
If you want to support the project, click the "Like It" on the page.
I proudly present after 10 month of planning and developing the first stable Arcanum Editor version 0.5.
This release contains little bugfixes and improvements from version 0.4 and there are no more known bugs in it.
In future new releases will have a larger time interval, until they are published.
So I am able to start planning another project, which will also make use of the CTXT file format.