Why do I get "cannot read new file format" error when try to open a Strater SDG file?

Strater is not forwards compatible, so this error is issued when trying to open a file that was saved in a version that is more recent than the version that is being used to open the file.


This could happen with minor updates (i.e. trying to open an SDG file in Strater 5.0 that was saved in version 5.1), or with major upgrades (i.e. trying to open an SDG file in Strater 4 that was saved in Strater 5).


For minor updates, File | Online | Check for Update command to update your version of Strater and then try opening the file.


For major upgrades, follow the instructions here to purchase the newer version at the discounted upgrade rate.


Updated August 15, 2018

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