Apologies if this has already been asked but has anyone been experiencing problems installing plugins recently? Older plugins still install correctly but every time I try updating a plugin and rezipping it, I get the 'Error: Plugin not a valid Sigil plugin' message. I've tried two different laptops, installing the latest version and even unzipping working plugins such as testplugin_v020.zip and rezipping them with the same results. I've tried both Windows zip and 7zip but no joy. Any help or advice appreciated.
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