I ended up using this for Autocad 20105
<RuntimeRequirements OS="Win32|Win64" Platform="AutoCAD|AutoCAD*" SeriesMin="R20.0" SeriesMax="R20.0" />
<ComponentEntry AppName="Appname" " ModuleName="./Contents/Resources/Company.lsp" PerDocument="True" LoadOnAutoCADStartup="true" LoadOnCommandInvocation="True"/>
<ComponentEntry AppName=""Appname" ModuleName="./Contents/Resources/2015/Company.cuix" AppDescription="Company CuiX" AppType="CuiX"/>
But it does not copy/update files from the Server Folder like it does for 2017. I'm not even sure loading a partial cuix from XML is a good thing.
Sure hope you anyhone can come up with an answer on why TheSwamp Loader is not working om 2015.
Question for you: Can we call an EXE file from the PackageContents.xml?
BTW: Thank for all your help.
EDIT: Makes me wonder did it ever worked on 2015 as i mentioned on the other post. I wanted it to work so bad that i imagined it working the first time