Work Environment reported empty when Add to Project

[kevbarb]

Hi, I'm trying to use HDF5 result files from Caiman in Mesmerize. When I import the HDF5 file I see the ROIs and trace data for each ROI. But when I try to Add to Project to begin using the flowchart for analysis, I'm met with the following error-

However, when I look through the Work Environment Viewer, I see ROI data of the correct Matrix size. Here is the Work Environment Viewer in case that helps identify why the work environment is being reported as empty-

Can anyone help me understand what is missing with my Work Environment to be able to Add to Project to begin using Flowcharts?

Thanks!

Kevin

[kevbarb]

I realized I needed to have the tif images used to generate the CNMF in Caiman imported in the Work Environment before importing the HDF5 file.