Having trouble installing AutoCAD Civil3D 2015. Says it's already installed.

[kbmurr02]

Hello, I am having problems installing Civil3D.  I already have AutoCad 2015 installed already and have been using.  I sucessfully downloaded the Civil3D version but when trying to install, I get an error message saying a new version of this software is already installed.  However when i try searching for the program on my PC i cannot find it.  I only find the set-up utilities and several other packs that were insalled during the installiation process.  The actual Civil3D software just cannot install.  Pics are below.

Notice that the Civil3D icon is there and  I can open it at that point and i get the confirmation email hat the license have been verified.  but once I hit that ok button, it disappear and cannot be found again.  The pic of the next window that appear is below

any help/tips...need to use software ASAP.  Go a project to work on for school.

[david.lau · Accepted solution]

Uninstall BIM 360 add-in for AutoCAD.  It's been updated and your base install of Civil has an older version.

http://knowledge.autodesk.com/support/navisworks-products/troubleshooting/caas/sfdcarticles/sfdcarti...