up until now, I had no problems with photomerge. Recently, worked on about 800 images in CC, about 30 of them merges, with no problems at all. However, this changed today, as I tried to merge 2 images. PS kept on hanging half way trough the process, the only to stop was through task manager.
Rebooted the PC and tried others - which I had merged before - with the same result. It doesn't matter from where I open them.
The only thing I have done since the others, is uninstall CS6. There doesn't appear to be a way to repair the installation, or at least none that I am aware of.
What could be wrong
found the problem. Must have accidentally pressed the "Tall and Thin" button in the performance panel. Cache level was set to 1 and Cache Tile Size to 128K. Changed the levels to default and all is well