I've recently tried to install the latest version of Kdenlive from the sunab svn repository, version 0.8.1+svn20110822.r5837-0ubuntu0~sunab~natty1
When I try to run kdenlive from a terminal, it does not start, and I get the following error:
bv@LUCINDA ~ $ kdenlive
kdenlive: symbol lookup error: kdenlive: undefined symbol: _ZN3Mlt7Profile12set_explicitEi
bv@LUCINDA ~ $
Any ideas?
Running Linux Mint 11 (Ubuntu 11.04 / Natty), 64bit
Thanks

Found this thread right after posting which gave the necessary hint (I should learn to search properly)
http://www.kdenlive.org/forum/kdenlive-undefined-symbol-zn3mlt7profile12...
Turns out I had installed kdenlive, libmlt4 and their dependencies, but this did not upgrade libmlt3++, which I had to do manually. Once that was done, kdenlive starts up fine.
-- BV