what mode are you in? 8bits/16bits/32???
I have tried both 8bit and 16bit with the same result.
hmm i been looking in to this,
can you try:
when the dialogue opens, change the resolution to somehting slightly lower (may require experimentation). The thread also suggests changing the trim or bleed blox to another setting then back again?
let me know how it goes
For anyone in the future who may have this problem, I had to change the resolution to something lower. Then I had to change the bleed box to another setting and back again. After both of these steps it finally worked! Worth to note, though, that doing one step without the other did not solve anything.