Dear Kornel, in order to properly test and fix problems with CJK input encodings, I installed the CJK package. However, tests and "hand-compilation" still failed for inputenc == utf8-cjk.
After reconfiguring LyX, "hand-compilation" works but the autotests still failed! >From the test logs, it seems that ctest starts LyX with user-dir set to "<build-dir>/Testing/.lyx". Deleting this directory and running "make" and "make rebuild-cache" resulted in the tests now passing :-) What is the correct method for updating the LyX-configuration for the autotests? Where should I have looked for documentation? Thanks, Günter