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Thank you very much for giving us an opportunity to help you. You get the error if you opening a file it with the same or a newer version than it was created with or have you created it on the same version ? Please Export as an InDesign Interchange (.inx) file.
Choose File > Export.
Choose InDesign Interchange (INX) as the type (Windows) or format (Mac OS).
See if you can open the file .Possibility is that the originator of the file has a plug-in installed which is now preventing any copy of the software without the plug-in, from opening the file. Waiting your feedback to help you
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