Hypersnap errors --> 30 screenshots lost

Dear all,
I would like to know if anybody can help me with the following problem:
I'm using Hypersnap 6 under Windows 7 for business use and today I made 30 screenshots of an application which were very important to me. Unfortunately the program had an error, the tool has closed and my screenshots were lost :(
 
Do you know any option to recover my lost screenshots?
 
What I've done so far:

• searched in temp files within \user\AppData\
• searched for temp files in the program folder of HyperSnap6
• contacted local support in my company

 
No success so far... Thanks in advance for your help!
 
 
Please provide this additional data: 
Exact HyperSnap version in use (from Help/About menu): ___6___ 
Windows version in use: __7__ 

search for "everything.exe" search engine, an easy search engine
install it;  it searches for file names only, and uses fractionated text
do a search for          hyp  jpg  (that assumes that you were saving file names as hypersnap-something.jpg;  if different extension, replace the jpg with that extension
see if anything comes up
 
if sok, right click on one of them, and select "open path"
 
to all, this search engine is fantastic and fast
 
nick