Vaidation crash

I got this at the end of validation on Windows. Any ideas? Simon Traceback (most recent call last): File "../driver/runtests.py", line 251, in <module> execfile(file) File "./quasiquotation/T4491/test.T", line 7, in <module> only_ways([config.ghc_th_way]), AttributeError: TestConfig instance has no attribute 'ghc_th_way' make[2]: Leaving directory `/c/code/HEAD/testsuite/tests' make[1]: Leaving directory `/c/code/HEAD/testsuite/tests'