Drawing tools stopped working

[DaveR]

The reason for using Run as administrator has been explained many times and failure to do so has proven many times to be the cause of weird problems. @TIG and @slbaumgartner have both written good guides with the reasons for using Run as administrator (and not logging in as System Administrator for installation) when installing SketchUp.

TIG wrote this and @slbaumgartner wrote this:

Why the installer must be "run as administrator"

Since the release of SU 2017, there has been a tidal wave of posts from people who encountered problems with SU because they did not install it properly on Windows. The only correct way is to right-click the installer and select “Run as Administrator”. It is not enough to be logged on as an adminstrator. This requirement (which is not unique to SketchUp) is because modern OS’s have upped their security requirements to protect against malicious code that tries to modify crucial system areas su…