Dear Sebastian and Sebastian.
Thank you for reporting. It is an issue that appears a couple of weeks ago (for my student project's groups) without any change in the version of SARL or the development environment.
It is thrown into the Google Guice injector before all the classes of the SARL compiler are loaded into memory.
Thank Sebastian R. for the quick fix. I have created an
issue for applying it to the SARL code.
I will patch version 0.12 also in order to release it as 0.12.1.