Plugin Error

Errors in plugins? Retry to Update or Configure.

ArgumentError
same file: /home/harunaru/var/tdiary/harunaru//cache/recent_comments and /home/harunaru/var/tdiary/harunaru//recent_comments
/usr/local/ruby/1.8/lib/ruby/1.8/fileutils.rb:1401:in `fu_each_src_dest'
/usr/local/ruby/1.8/lib/ruby/1.8/fileutils.rb:1418:in `fu_each_src_dest0'
/usr/local/ruby/1.8/lib/ruby/1.8/fileutils.rb:1400:in `fu_each_src_dest'
/usr/local/ruby/1.8/lib/ruby/1.8/fileutils.rb:495:in `mv'
(plugin/recent_comment3.rb):21:in `recent_comment3_init'
(plugin/recent_comment3.rb):41:in `recent_comment3'
(TDiary::Plugin#eval_src):201:in `eval_src'
/home/harunaru/tdiary/tdiary/plugin.rb:96:in `eval_src'
/home/harunaru/tdiary/tdiary/core_ext.rb:82:in `safe'
/home/harunaru/tdiary/tdiary/core_ext.rb:80:in `call'
/home/harunaru/tdiary/tdiary/core_ext.rb:80:in `safe'
/home/harunaru/tdiary/tdiary/plugin.rb:95:in `eval_src'
/home/harunaru/tdiary/tdiary.rb:214:in `do_eval_rhtml'
/home/harunaru/tdiary/tdiary.rb:162:in `eval_rhtml'
/home/harunaru/tdiary/tdiary.rb:779:in `eval_rhtml'
/home/harunaru/tdiary/tdiary/dispatcher/index_main.rb:43:in `run'
/home/harunaru/tdiary/tdiary/dispatcher/index_main.rb:6:in `run'
/home/harunaru/tdiary/tdiary/dispatcher.rb:21:in `dispatch_cgi'
/home/harunaru/tdiary/index.rb:36
index.rb:2:in `require'
index.rb:2