Hello Marc LEFORESTIER ,
It seems that you didn't install the correct edition CodeWarrior, please download and install CodeWarrior for LS ARMv8 from CodeWarrior ARMv8 64 bit|NXP , please download the offline installation package about 2.5G.
Then use the online updater in CodeWarrior IDE to update to the latest version.
After install CodeWarrior for ARMv8 2016.01, please open the panel from Help->Install New Software->Available Software Site, check ARMv8 Eclipse Update Site, click the drop down list at "Work with", select "CW ARMv8 Updates - http://cache.nxp.com/lgfiles/updates/Eclipse/ARMV8_11_2_3/Windows", then select "CodeWarrior Updates" to follow the installation wizards to do online updating step by step.
Have a great day,
TIC
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------