have found the save game:
for win7: C:\users\\AppData\Roaming\Macromedia\Flash Player\#sharedObjects\\chat.kongregate.com\gamez -> search for SteamBirdsProject_secure.swf and copy the 2 files from this folder to SteamBirdsProject.swf --> refresh the page and your progress is there again
sometimes there is a bug showing all numbers greyed out though one field is missing (coloured fields mismatch with the number at the side)
after some experiments this bug can appear when a rank is completely filled, for example the row: 1 1 2 1 1 1 will be shown as ok when filled with x_x_xx_x_x
(x marking a filled field and _ the cross)
this is because the numbers are checked from both sides and greyed out as soon the number of fields are found.
so in case a row/column is completely filled the check must determine that blocks are missing.
but nevertheless it is an awesame game :) good work :)
this game bugs if u kill a ninja falling from the sky in slowmo and the slowmo ends before he hits the ground he won't die and u can't attack him anymore, that means that u will definitely loose hp... ~~