siskin11 wrote:
Hi
I can open files fine in Photoshop CC, but if I try to use the Camera Raw filter, I get the "file format module cannot parse your files" error. This only happens with larger TIFFs, say 300 MB or so - 70 MB files work fine.
300MB Tiff seems like a large files size for a Tiff which leads me to believe its a layered Tiff. ACR does not have Layers support try opening the Tiff file in Photoshop not through ACR to see it there are layers. If there are target all of them and convert to a smart Object then try ACR as a filter. A smart object is a single layer in Photoshop.