[Unable to view saved object file]

Thank you but I have just tried that and no luck

[Unable to view saved object file]

Yes and I have rolled back to an earlier version and still it is happening

[Unable to view saved object file]

Whenever I go to export an object from anywhere in 3d-coat, it only appears to 3d-coat.  No other programme can see it even though it is saved in obj format.  Never had this problem before and it has just started it.