On the Mac OS platform, if you try to save at the same time as the autosave is running (like right after you close the rendering window) the program locks up and crashes. This was true for v6.0 as well.
In versions previous to 6.0/6.5 you could apply a texture over the Neon Light shader. Through transparency settings and Alpha channels you could get some very useful effects. This no longer seems to be the case. Is this a permanent change or a bug?