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Bad file version

Mohamed Alaa

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Hi Mohamed Alaa,

I just opened up a new thread for your question since it touches a slightly different topic, I hope this is ok for you. The message 'Bad file version' pops up if you try to open project files in older program versions. For example, when you create a project in PV*SOL premium 2018 R9, you can't open it in PV*SOL premium 2017 R9, or sometimes even in newer versions of PV*SOL premium 2018 (i.e. R8 and before).

So, please ensure that you have the same software version of both of your devices.

Kind regards,


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  • 1 year later...

Hi Nicolaas,

there is no user friendly way to see that. If you are willing, you could unzip the pvprj file using 7zip and then take a look at the file "Project.xml". There you will find a node that looks like this:

    <Program>PV*SOL premium 2020 (R9)</Program>

If that seems too complicated, you can send a file and I will take a look for you.

Kind regards,


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