I have a issue that I keep running into every time I go to open a 2014 skp file off my thumb drive.
It’s a permission thing. The file is from a source that’s not your HD.
Try saving it under another name on you HD. For performance sake, it’s better to work off your HD instead of a thumb drive.
usually occurs because the plugins version does not match the version of the SU, so it does not look or error.
hope it is useful