Prior to PixaFluxversion 20170319, the Shapes node allowed users to create, organize and colorize curves in the Shapes node.
Curves are now Node Values that flow through the Graph.
For this reason the Shapes node was deprecated.
When an old project with a Shapes node is opened, PixaFlux will convert the curves in the Shapes node to Curve nodes, and the Shapes node is converted to a Colorize Curves node. However, the Colorize node doesn't support Image fill option.
If you need to load an old project with a Shapes node that uses the Image fill option, download an old version of PixaFlux that support shapes (2017 02 26) and modify the project.
Alternatively, you can use the Mask node to fill your curves with images.