Problem with folder protector 5.39

<gras>Hello frends,

i had around 40gb data in my D drive( including a folder named xyz(size = 10 gb), which was protected by folder protector 5.39) i had to empty my D drive to install another operating system, so i just cut the complete contents of D drive( including folder xyz) and pasted in my C drive, its copied 30 gb of data from drive D to drive C, but in last 10gb of data which was folder protected was not copied as it showed a error message.

now drive d has the folder xyz, but the documents inside that are missing. where as the size of folder xyz is 0 bites, but the size of drive D is 10 gb, i have unlocked folder xyz with correct password, but documents inside is missing.

is there any way that i can retrieve my data back....