dump format error(0x83) (ArgumentError)

/usr/lib/ruby/1.6/pstore.rb:98:in `load'
/usr/lib/ruby/1.6/pstore.rb:98:in `transaction'
/home/sameera/public_html/diary/tdiary.rb:543:in `transaction'
/home/sameera/public_html/diary/tdiary.rb:1042:in `initialize'
/home/sameera/public_html/diary/index.rb:29:in `new'
/home/sameera/public_html/diary/index.rb:29