Firstly, please make sure you are using the latest avaialbe version of Recover My Files - version 3.73, available from
www.recovermyfiles.com.
If you get at consistent problem with this version at the end of the disk then there is something very nasty happening there.
Please run a "Complete Format Recover" for the default file types up to 85% of the disk. Then stop the search and the program will rebuild all of the old partition that it has found up until this time.
Please let me know how this goes and I will give you further instructions.
Please do not run checkdisk any more.
Thanks