Comment 1 for bug 1423489

The problem is probably the size of your input image: 14200x7100 with bit depth 96. The 32 bit version of Hugin can only use 2 GB of RAM, even if you have more RAM installed. And the input file seems to be too big to be handled by nona 32-bit.

I see currently no easy way to workaround this problem in the 32 bit version. But you wrote already that the 64 bit version works fine, so it seems of low priority.