As I keep trying to explain, this is NOT caused by the launcher installing the wrong version of Java - I simply cannot understand why they can't just try launching the game with the default arguments - which should NOT fail regardless of whether it is using 32 bit or not - and provide screenshots of the snooper, or force a crash with F3+C (which should be short enough so they can paste it here; the other report was a JVM hs_err_pid log, most of which was not relevant). I have looked for reports of the launcher downloading the wrong version of Java on the bug tracker but can't find anything at all about this, and indeed, that is exactly why you should use the bundled runtime.
Also, it is a known issue that Java will not work properly if there isn't enough free swap left, even if it isn't even being used, including disabled entirely:
Like I said before, there is no reason to be using nearly all of the available memory and they need to clean their computer (close unnecessary programs and background processes; how can my computer even manage to run with only 3.2 GB of available RAM and 6.4 GB of swap if they are using 7/12 GB?!):
I really feel that they do not really want any help; you do not need to register to upload to Pastebin; just paste in the report and copy the link and paste it here.
As I keep trying to explain, this is NOT caused by the launcher installing the wrong version of Java - I simply cannot understand why they can't just try launching the game with the default arguments - which should NOT fail regardless of whether it is using 32 bit or not - and provide screenshots of the snooper, or force a crash with F3+C (which should be short enough so they can paste it here; the other report was a JVM hs_err_pid log, most of which was not relevant). I have looked for reports of the launcher downloading the wrong version of Java on the bug tracker but can't find anything at all about this, and indeed, that is exactly why you should use the bundled runtime.

Also, it is a known issue that Java will not work properly if there isn't enough free swap left, even if it isn't even being used, including disabled entirely:
JAVA Memory Allocation Failures Due to Insufficient Swap Space
Like I said before, there is no reason to be using nearly all of the available memory and they need to clean their computer (close unnecessary programs and background processes; how can my computer even manage to run with only 3.2 GB of available RAM and 6.4 GB of swap if they are using 7/12 GB?!):
I really feel that they do not really want any help; you do not need to register to upload to Pastebin; just paste in the report and copy the link and paste it here.
TheMasterCaver's First World - possibly the most caved-out world in Minecraft history - includes world download.
TheMasterCaver's World - my own version of Minecraft largely based on my views of how the game should have evolved since 1.6.4.
Why do I still play in 1.6.4?