Hi John,
My apologies in the delay in getting back to you.
There are a few things I can recommend you try and then see if the error still occurs after each one. I’ve listed them below.
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Manually uninstall PlusSpec, then reinstall it again. There is a section at the bottom of our FAQ page which explains how to do this. The link to this page is below.
http://plusspec.com/faqs/ -
Manually uninstall PlusSpec again and uninstall SketchUp, then reinstall both. Please note that you may need to enter your SketchUp license again. The link to download SketchUp is below.
http://www.sketchup.com/download/all -
Update Safari to the latest version. You will need to update to the latest OSX version as well if you haven’t already done so.
Also, I read earlier that you installed PlusSpec on a second computer and was wondering is it still working fine on this computer?