Unset tagging threads to 1 because it seems that the crashing wasn't
caused by that. Crashing seemed to be a result of Eclipse not actually
increasing its heap size on Mac OS. Seems on Mac in Eclipse you have to
go to Preferences -> Java -> Installed JRE's -> (click on the Java 7
one) -> Edit -> and on the "Default VM arguments" line add something
like "-Xmx4096m -Xmx2048m" (which will give you 4 GB max memory and 2 GB
min memory for Java in Eclipse. You would probably be fine omitting the
minimum memory statement. Thanks Hoa, for figuring this out. 

Anonymouth should work reasonably well.