Hi Ben, do you specify the ram size that java can use?
In my blueprint.bat I have
java -Xmx2048m %java_option% -cp "%bluepath%bin/blueprint.jar" -Djava.library.path=%bluepath%native blueprint.Blueprint
not related, but java_option=-showversion
EDIT: I got this from URL:https://www.eurobricks.com/forum/index.php?/forums/topic/108346-software-blueprint-a-building-instruction-generator-for-ldd/&page=14