I installed Qimage for the first time yesterday and at first everything seemed fine. Then I changed changed from one folder to a different folder containing a mix of like 575 jpeg, tiff, and nef files. It started building the thumbnails but then stopped part way through. I looked at my talk manager and it had stopped using any cpu power. If I clicked on anything I got a yellow box in the center of the screen that says please wait and I couldn't click on anything and nothing ever happens. I've had to close it via task manager. When I open it up it loads a few more things then stops again. If u try to change folders back to the original I get the yellow box and the program stops responding to me. I have had some luck turning off thumbnails and using list mode only, I can change it back to my all jpeg folder I first used and print. However if I try to turn in the thumbnails again I get the yellow box and things become unresponsive again. I have tried to uninstall and reinstall a few times but it makes no difference. Anyone know what's going on? Thanks!

Ok, I'm going to be most unhelpful here to report that that the folder that has the mix of files types contains raw .nef files from various Nikon cameras I've had over the years. A D90, D7000, D7100, D800, D800e, and D810. The system is an x64 version of Windows 10. I am running an AMD processor with 8 threads and 4 cores and when I open the program that is the number of cores and threads shown.

I accidently left Qimage running last night in the "Please wait..." state. So 11 hours later it still looks exactly as it did before and it still says 0/573 and rendering. No changes from when the yellow "Please wait..." box showed up...

But in the meantime - please try a folder with say ten NEFs in it, and perhaps another one with only a couple of dozen Jpegs.  The comparison might be informative - especially if you get the same hang response.

Ok, the jpegs folder seems to work ok, the ten nefs folder seems to work ok (though my not all the lightroom edits and crops show up even after thumbnails are built). Something about that large folder makes the program run funny and eventually grind to a halt.

I think that choffman may be on to something.  There is probably one picture in that folder that is bad in some way - maybe not in the same as the zero content gif file - but in some way causing the program to hang. BTW, I assume you are running the most recent version of QU?