Perform at your own risk. You could get electrocuted or spill coffee all over your hard drive.
Here's the steps to solve the problem.
1. Download and extract the tarball to a directory, preferably somewhere kosher, like ~.
2. You'll need to copy or move the files from each directory in LiteratureAndLatte/plugins/ into LiteratureAndLatte/lib/. Open a terminal window.
$ mv /home/[YOUR_USER_LOGIN]/LiteratureAndLatte/plugins/codecs/* \
Alternatively, just drag and drop the contents of each ./plugins directory into the ./lib directory from your file browser.
3. Now we have all the dependencies Scrivener is looking for corralled. So we need to point Scrivener to them. Use a script.
$ cd /home/[YOUR_USER_LOGIN]/LiteratureAndLatte/bin/
$ touch scrivener.sh
$ vi scrivener.sh
If vi scares you, use gedit, nano, kwrite, geany, or whatever your favorite text editor is instead. Paste the following into the script:
# This script tells Scrivener Beta to where look for the
# dependencies it comes with in the tarball
# since it gets cranky otherwise.
# No guarantees or material representations are made about this script.
# GPL applies.
4. Now make the script executable.
$ chmod 755 scrivener.sh
5. To run Scrivener, type "/home/bast/LiteratureAndLatte/bin/scrivener.sh" from anywhere. If you want to feel fancy, do an $ echo $PATH and move scrivener.sh into one of those directories and "scrivener.sh" will work from anywhere. You can also add the script to a menu.
Nothing here should affect anything outside the Scrivener directory. It's really Windows-style to do this but it keeps the rogue dependencies with the offending program for easy removal.