GenerateDsl.mwe2 error if changing the Target Platform

Question

I have a XText project where I have a gramair (DLS.xtext file). I copied my XTExt project to an Eclipse workspace where I have changed the target platform, but I have included in this target platform the XText, XTend plugins).

After changing the Target Platform I see an error in GenerateDsl.mwe2.

Answer 1

I added in the target platform: