[Qgis-user] Message box "Unknown error"

[PIERRE Sylvain]

Hello,

When trying to load a qml file  with complex polygon symbols saved with 2.6 into 2.12 I got a small message box with "unknown error" (erreur inconnue in French)
Layer doesn't display anymore and message still display until I remove the layer.

Is there anybody here experienced such problem?

Thanks

Sylvain

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