Not able to retrive my files from folder lock

i have installed Folder Lock v5.8.0 long time back. i have locked very important files and folder using folder lock tools. But some how from the last 10-15 days while entering password it got struck & its showing "...has encountered a problem and needs to close. We are sorry for the inconvenience." And also its not re-installing.
The main problem is that i am not able to retrive my files and folder from D Drive.
PLS let me know how to get my files back. THESE FILES ARE VERY IMPORTANT FOR ME.
PLS HELP me to retrive it back.