I havn't been able to replicate it yet, but yesterday I started making a new map. I added about 10 or so nodes with various links between, etc. Then I tried to save the file as a CAYRA file as well as an HTML file.

I never received an error, but when I went to the location in Windows where I had tried to save the file it was not there. I never could get that file to save and ended up losing the file (wasn't important info). Later I found that I could modify the "Hello" file and save it fine, and since then I have been able to create new files and save them.

I know this isn't helpful for debugging at all, especially since I can't seem to replicate it myself, but hopefully you can find whatever this bug is. Feel free to contact me by e-mail if I might be able to help identify it.

Scott