AVG kicks out Sketchup Pro install - says its a malware/virus

Tried install Sketch-up pro twice which was downloaded directly from Setup Confirmation - Middle EDU | SketchUp we site. Part way through the deployment/install AVG intercepts and says there is a virus/malware (can’t remember which) and then stops the install. I tried a second time since I was comfortable that the download was not from a hostile web site and then told AVG to not quarantine. However, It superseded and eradicated the files from hard drive, did not even quarantine anything. Any ideas? Has the install files being corrupted at the source. Authors please advise. Thank you