Can you try to use the dispenser tool and then send us your logs? It would help us narrow down the issue.
To do this, start Universe Sandbox up, try to load recreate your issue, after it fails. Click on the feedback icon (little star on the right). You can put in your email if you'd like us to use that to contact you. Put Atten: C7 Dispense Tool bug in the comments section, and make sure the send log option is checked.
Either that, or you can attach the log file to this forum thread, as you've done with the image.
Thanks!