Embarcadero RAD Studio XE8 Error

[Error Error] Invalid PLATFORM variable "__". PLATFORM must be one of the following: "Win32", "Win64", "Android", "iOSSimulator", "iOSDevice32" "iOSDevice64", or "OSX32". If PLATFORM is defined by your system's environment, it must be overridden in the RAD Studio IDE or passed explicitly on the command line to MSBuild; e.g., /p:Platform=Win32.

Check path tools->options.

Remove variable "platforms". Restart Rad Studio.