Thanks. I can't use h12 yet, but I am very much looking forward to it. In the meantime, I'll be fiddling with the libraries for 11.

Dave

I had the same problem on Ubuntu 12.04 and Houdini 11.1.201. After installation there was no icons. I replace all files exept hsvg-real, hsvg and librsvg-2.so.2 from /opt/hfs11.1.201. And also while i was trying to solve the problem i created symbolic links in /usr/lib:

$ cd /usr/lib
$ sudo ln -s libdirectfb-1.2.so.9 libdirectfb-1.2.so.0
$ sudo ln -s libfusion-1.2.so.9 libfusion-1.2.so.0
$ sudo ln -s libdirect-1.2.so.9 libdirect-1.2.so.0

And it works!