failed to allocate memory (NoMemoryError)

/usr/local/lib/ruby/1.8/pstore.rb:354:in `load'
./tdiary.rb:72:in `join'
./tdiary.rb:72:in `safe'
./tdiary.rb:656:in `eval_src'
./tdiary.rb:903:in `do_eval_rhtml'
./tdiary.rb:853:in `eval_rhtml'
index.rb:71