You can ignore web interface and go directly to database then look for table (0_fiscal ....) in case your company=0_ and prefix table =0_ .
Then browse that table data (NOT table column types and structure) .
Then Delete the old fiscal years 2008, 2009, 2010 and keep only 2011 (which you should create it before and make it the active one in your company setting from web interface).
Then change the id value for 2011 recort at the table to be 1 instead of 4 in my case.
close your database now
back to your web and maybe you need to Ctrl+F5
let me know if that help you
Best Regards