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Issue with Inverter in 6.4.3


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I have a project which has AE 500 NX -H inverter created in version 6.3.9 but the same project after updating my PVsyst to 6.4.3 is giving an error message to the project saying Inverter invalid as see in the attached image. Could you please let me know any solution to this problem.

Thank you,



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  • 3 months later...


We also seem to be getting a similar issue (v6.42), when changing the inverter efficiency values. We have re-installed PVsyst a few times, however the issue seems to creep in but not for user.

The file errors out with a blank error message and appears to corrupt the file if you save after. Screenshot attached of this in progress.

Many thanks,



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  • 3 weeks later...

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