Hi,
I have an issue with opening an ods-file (attached). The following error 
is thrown when trying to open the file (either via GUI or script):
Interestingly, the xlsx-equivalent does not provoke an error and gets 
loaded properly.
I am using a recent gretl snapshot from last week on Ubuntu.
Just another minor thing: While drag-and-drop works for the xls(x) file 
type, it fails for ods. Might be a bug or simply not supported (which 
would be totally fine).
Best,
Artur