Unable to update case for restored model

[junohBede]

Issue

When backup model with cases that have no data file and restore the model from another computer, update case & generate data file generate Internal Server Error.

How to recreate

1. Back up model which has cases with no data files.
2. Restore the backed up model from another machine.
3. Update case in the run model tab.
4. Generate data file in the run model tab.

Note

If the case has a data file with it, restoration and running the model have no issues.