I attempted to update from v1.0.5.1 to v1.0.5.2 today using the updater and my security software flagged a Trojan multiple times. This is what I am getting (linked to pictures of the threat notification since I can't post pictures in this forum): Error message of VU VirusProtection of Occamy.AAby stirge stirge stirge - Release Notes
It has been a few days since this was posted but I thought I would take a crack at a solution given that this also happened to me. What worked for me was to bring all of the edges of the 'green' Finder window onto the screen, not even a small grey edge hidden off screen or under another screen. Everything is back to normal now and I am getting the correctly colored drops marked. Hope this hby stirge stirge stirge - Issue Troubleshooting