env.path is undefined after installing VS2015 on build agent

Hello mates!

I have a problem that cannot be solved by myself, so I really need your help. Skipping the unnecessary details I have:

- Build agent on Windows 2008 R2

- Project and variable specified as: env.path = C:\Curl;%env.path%

- TeamCity Enterprise 10.0.2 (build 42234)

All worked really fine but after installing VS 2015 with .net Framework 4.6.1 I`m getting "parameter env.path is undefined" message whatever I`m specifying it or not. If I remove this variable and trying to echo $PATH - it works fine. But if I`m specifying it is undefined always. Also I found the same problem in comments but there is no solution - https://teamcity-support.jetbrains.com/hc/en-us/community/posts/206156229-How-to-change-an-existing-environment-variable-e-g-PATH-of-windows

Please, feel free for any advice