Hi Regina > C:/cygwin/opt/lo/bin/make -j 4 -rs -f C:/LO_buildDebug/core/Makefile.gbuild all have you tried with "PARALLELISM=1": /opt/lo/bin/make gb_COLOR=1 PARALLELISM=1 C:/cygwin/opt/lo/bin/make -j 1 -rs -f D:/sources/libo-core/Makefile.gbuild all [...] i just started a new build and did not receive build breaks so far... Regards Oliver