expression prevent dispatch if imagedata is involved

[William Eguienta]

Hi,

not sure if it's a bug or me doing an unexpected thing,but my expression node prevent the dispatch

the issue comes from the fact that I collect info from MergeEXR['in'] node to setup FFmpeg

As the images doesn't exist at this moment, even if my FFMPEG node is a post-process of the render, dispatch can't be done and require the image

removing the query on MergeEXR['in'] allow the dispatch to be done again

is it possible to make it works ?

thanks