Do you have any ACS common package installed that may have caused a conflict ? If so check the "error.log" to find out if there has been a conflict. 

You may want ot check the following sample project and compare the structure with what you have and make sure Coral components have been used properly. Creating a Granite/Coral 6.3 Multifield HTL component for Adobe Experience Manager

Check the following documentation:Jackrabbit Oak – Authentication with the External Login Module

If this growth seems unusual I recommend to understand the reason by analyzing the unusual repository growth [1] then you will be able to take the action to address it.[1] Analyze unusual repository growth

If you are connected to this machine as admin then the last thing that I can think of is that the .jar file is somehow corrupted. 

you should lower the -Xmxuse this command > java -jar -Xmx1024m aem64-author-p4564.jarNote: if your machine does not have a good hardware spec it may take up to a couple min for the page to come up.

Can you do the following:- change the name of the .jar file (assuming its an author environment) > aem64-author-p4564.jar- run the command > java -jar -Xmx4G aem64-author-p4564.jar

Your JDK seems alright.Can you provide the command/script you used to run the .jar file ?

1. Can you post the output of java -version ?2. Are you running quickstart as root/admin ?

The following provides an approach to creating emails using Experience Fragments for delivery using Adobe Campaign and not sure if the same can be done in AEM:Experiencing Adobe Experience Manager - Day CQ: AEM 64 - Creating Dynamic Brand specific Emails using Experience Fragmen…