Dear All,
I did a save as to a new case and run the model again. However, I cannot open the new case and the dialog box said that “is not an AIMMS case file” as shown in following figure.
![](https://uploads-eu-west-1.insided.com/aimms-en/attachment/12e96186-b9fc-45f2-afa6-a6cef96730ac.png)
Is there a way to fix this?
Many thanks.
Best answer by Gertjan
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