Error merging layers

[Tailune]

After latest update cant merge my layer, i have my background image and after adding a new image with bokeh lights setting this new layer to screen if i merge this 2 layers there is no problem, but if i transform the bokeh layer so i can place them i the way i want if i want to merge this 2 layers it bumps a program error and cant merge.

[prueh28761366]