USB stick shows up in Apple system but not in Disk utilities nor in finder

Question

I havebought a brand new USB stick, brand Intenso (this is the last time I buy this brand!!) . I opened it and pluged it to the fast usb port on my Imac (osx10.5.8), till now all good, it shows up on the finder I save an important file on it and eject. A week later, my hard disk crashes, I try to recup a little data here and there. I dig out the Intenso stick, plug it: NOTHING. It appears in the Hard Disk: About------->More Info but not in the finder nor in Disk Utilities.
I tried on another mac laptop this time, still nothing and a laptop Pc: nothing.
Given that I already lost mega valuable data, it would a gift of God if someonecan help me recup at least this file!! Help

Answer 1

I could be looking at the wrong Disk Doctor application, the one I saw would not recover files, at least that is what I understood from the write up, it could be a different application than the one you have though.
Disk warrior is expensive and there is no guarantee that it would work, I suppose if you cannot find another application then you have a decision on if you want to buy it.
I would suggest you stop trying to recover the files until you have determined what applcation you want to use, the more your try and access the USB stick the more you are likely to make things worse. When you have a suitable application then give it a try, hopefully it will work for you.
Good luck