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Topic: Unable to open Arduino (Read 111 times) previous topic - next topic

EthanWu13

When I went downgraded my macbook 2011 to macOS El Capitan my Arduino will not open anymore. I had my macbook at High Sierra but I was having many troubles with that so thats why I can't upgrade back to Sierra and High Sierra.

Here is the error message:
https://pastebin.com/ZSjeHGzQ

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