How 2 recover locked files

Hello,
plz help me, i was using folder locker full version for protecting personal files.
but last month when i was using this software online 2 download some files directly into folder locker; after finishing my work when i back 2 home and try 2 open the file, it was not opening. then i tried reinstalling the program and lastly uninstalling , but i couldn't do uninstall. then in anger i deleted some files (may be system files) inside the folder locker main folder.
but later i realised my mistake and i tried to take my pen drive 2 my home town's pc, where i firstly installed this software, so that i may be able to uninstall the folder locker and recover my files. but again i got the message that "it is already uninstalled and you can delete the trace files from FOLDER LOCKER folder."
NOW whenever i open the folder of FOLDER LOCKER, there it is showing one html icon named "locked" which is containing 12.0 gb data, but i can't open that icon.
please help me 2 recover my data.