The autoloader mechanism is based on putting app files in a directory. However the mechanism is changed a bit and during testing AutoCAD 2017 combined with 2014, the apps were loaded twice in 2014 because they were both installed in %ProgramData% as well as in %Program Files (x86)%. How does one solve this problem? Use one installation of your apps under %Program Files (x86)% for 2017 and then...

We used junctions, AutoCAD 2014 expects %ProgramData% so the batch file prior to running contains something like:

makejunctions2014.bat
{{{
mklink /j "C:\ProgramData\Autodesk\ApplicationPlugins\CADchUP_Forensics.bundle" "C:\Program Files (x86)\Autodesk\ApplicationPlugins\CADchUP_Forensics.bundle"
mklink /j "C:\ProgramData\Autodesk\ApplicationPlugins\CADchUP_Profile.bundle" "C:\Program Files (x86)\Autodesk\ApplicationPlugins\CADchUP_Profile.bundle"
mklink /j "C:\ProgramData\Autodesk\ApplicationPlugins\CADchUP_Standard.bundle" "C:\Program Files (x86)\Autodesk\ApplicationPlugins\CADchUP_Standard.bundle"
rem pause}}}

After finishing CAD the junctions need to be removed:

rmjunctions.bat
{{{
rd "C:\ProgramData\Autodesk\ApplicationPlugins\CADchUP_Forensics.bundle"
rd "C:\ProgramData\Autodesk\ApplicationPlugins\CADchUP_Profile.bundle"
rd "C:\ProgramData\Autodesk\ApplicationPlugins\CADchUP_Standard.bundle"
pause}}}

Not very gentle and running 2014 and 2017 simultaniously is not possible but it works for our testing.