Doing

./install.sh

rvm install 1.9.2 --force --patch railsexpress -n railsexpress

i get a patch not found message:

...
ruby-1.9.2-p290-railsexpress - #extracting ruby-1.9.2-p290 to /Users/nico/.rvm/src/ruby-1.9.2-p290-railsexpress
ruby-1.9.2-p290-railsexpress - #extracted to /Users/nico/.rvm/src/ruby-1.9.2-p290-railsexpress
Patch 'railsexpress' not found.
ruby-1.9.2-p290-railsexpress - #configuring
ruby-1.9.2-p290-railsexpress - #compiling
...

Nico