You are modifying the "epilogue" of the state to be "Exit" instead of whatever it was before. Like other D, that's supposed to be uppercase, so it should be "EXIT". It probably gets fixed by the compiler, but the check for ALTER_TRANS is case-sensitive.
Compiling 1 dialogue file ... WARNING: can not verify EPILOGUE parameter for ALTER_TRANS stuff list near line 6, column 72 of stweaks-inlined/#gtremai.dProcessing 1 dialogues/scripts ...