We, the user community forum, need a lot more information than what you've provided to even postulate on this crash.
1) Windows version?
2) recuva version number?
3) is this a one time crash, or is it repeatable?
4) what scanning settings do you have set?
5) are you attemping to recover a certain (deleted) file? Or are you working with a formatted drive?
6) to your knowledge, how is the health of the drive? Is it and hard drive, a SSD a usb stick? If HDD/SSD is it external or internal?
7) are you attempting to recover the file to a different drive?
Edit: Ok in your image I see you have the professional version. This does grant you priority developer support (for a year after purchase). They may be able provide better/faster aid than the user community can, so you might wish to look into that (though rhey will need the same information I asked for above.
Edit 2: I now also realize questions 1 & 2 are answered in the image.