Inventor ETO Developer 2015 installs the ETO Studio 2015 extension, which loads by default. You cannot run 2014 and 2015 versions of the extension simultaneously, but you can switch between the two versions using the commands Restore Visual Studio 2014 Extension and Restore Visual Studio 2015 Extension located in the Start menu under Autodesk>Autodesk Inventor ETO Components 2015 R1. The VBScript that these shortcuts call is described below.
During installation, ETO Developer 2015 creates a backup copy of the 2014 extension (if present) in the 2015 installation directory. By default, that directory is C:\Program Files\Autodesk\Inventor ETO Components 2015\ETOStudio2014. To restore this copy of the 2014 extension, use the following VB script:
...\Inventor ETO Components 2015\bin\vsExtensionRestore.vbs
Running this script without arguments displays an error message with a description of the usage included here.
vsExtensionRestore.vbs /Restore:2014 /VS2012:{VS2012 Install Path} /ETO:{ETO Developer Install Path}
/Restore is either 2014 or 2015 to indicate which version of the extension to restore.
/VS2012 is the install location of Microsoft Visual Studio 2012.
/ETO is the install location of ETO Studio 2015.
vsExtensionRestore.vbs /Restore:2014 /VS2012:"C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\IDE\" /ETO:"C:\Program Files\Autodesk\Inventor ETO Components 2015\"
Running /Restore:2014 makes a backup of the 2015 extension in the following folder (by default) C:\Program Files\Autodesk\Inventor ETO Components 2015\ETOStudio2015.
To switch back to the 2015 extension, simply run the script as specifed above, changing the /Restore option to :2015, like this:
vsExtensionRestore.vbs /VS2012:"c:\program files (x86)\Microsoft Visual Studio 10.0\common7\ide\" /ETO:"c:\program files\Autodesk\Inventor ETO Components 2015\" /Restore:2015