Out of memory error occuring on one machine but not another when building ROM

[BromBromBromley]

For some reason, when I try exporting a ROM using the CE core released on August 20 and the CTRMapV plugin from June 8 on my laptop instead of my desktop, I get the following error.

Exception in thread "AWT-EventQueue-0" java.lang.OutOfMemoryError: Java heap space
        at java.util.Arrays.copyOf(Unknown Source)
        at xstandard.io.base.impl.access.MemoryStream.toByteArray(MemoryStream.java:46)
        at xstandard.fs.accessors.MemoryFile$1.close(MemoryFile.java:135)
        at xstandard.fs.FSUtil.writeBytesToStream(FSUtil.java:510)
        at xstandard.fs.FSUtil.writeBytesToFile(FSUtil.java:367)
        at xstandard.fs.FSUtil.copy(FSUtil.java:208)
        at ctrmap.formats.ntr.narc.DirectNARC.setData(DirectNARC.java:257)
        at WSFSPlugin.writeToArcFile(WSFSPlugin.java:56)
        at ctrmap.editor.system.workspace.WSFS.writeToArcFile(WSFS.java:182)
        at CTRMapPlugin.loadVFS(CTRMapPlugin.java:94)
        at CTRMapPlugin.loadVFS(CTRMapPlugin.java:100)
        at CTRMapPlugin.loadVFS(CTRMapPlugin.java:100)
        at CTRMapPlugin.loadVFS(CTRMapPlugin.java:100)
        at CTRMapPlugin.loadVFS(CTRMapPlugin.java:100)
        at CTRMapPlugin.lambda$registUI$0(CTRMapPlugin.java:129)
        at CTRMapPlugin$$Lambda$109/8112115.actionPerformed(Unknown Source)
        at ctrmap.editor.CTRMapUIManager$1.actionPerformed(CTRMapUIManager.java:35)
        at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
        at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
        at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
        at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
        at javax.swing.AbstractButton.doClick(Unknown Source)
        at javax.swing.AbstractButton.doClick(Unknown Source)
        at javax.swing.plaf.basic.BasicMenuItemUI$Actions.actionPerformed(Unknown Source)
        at javax.swing.SwingUtilities.notifyAction(Unknown Source)
        at javax.swing.JComponent.processKeyBinding(Unknown Source)
        at javax.swing.JMenuBar.processBindingForKeyStrokeRecursive(Unknown Source)
        at javax.swing.JMenuBar.processBindingForKeyStrokeRecursive(Unknown Source)
        at javax.swing.JMenuBar.processBindingForKeyStrokeRecursive(Unknown Source)
        at javax.swing.JMenuBar.processKeyBinding(Unknown Source)
        at javax.swing.KeyboardManager.fireBinding(Unknown Source)
        at javax.swing.KeyboardManager.fireKeyboardAction(Unknown Source)

Here are my laptop's specs:

Processor   11th Gen Intel(R) Core(TM) i7-11800H @ 2.30GHz   2.30 GHz
Installed RAM   16.0 GB (15.7 GB usable)
Device ID   7F203EB1-C8F5-4692-87DE-1B9B44CFD4FC
Product ID  00325-80000-00000-AAOEM
System type 64-bit operating system, x64-based processor
Pen and touch   Pen support

The weird thing is that it is able to build a clean ROM OK and also a clean ROM with PMC installed plus patches, too, so I think it has something to do with my VFS in some way? The only difference between my testing project and my actual project is the assets folder (vfs/data/a) and even then it seems to be a few problem NARCs like a008 and a014 from what I've been testing so far. I'm really at a loss for what it is given that I've been able to build OK on my desktop.

[HelloOO7]

Could you post the output of java -XX:+PrintFlagsFinal -version of both machines?

[BromBromBromley]

Yeah, sure.

Here's the log from my desktop:

https://pastebin.com/VVkxDxCE

Here are the flags for my laptop:

https://pastebin.com/6ciZaujT

[HelloOO7]

The maximum heap size on your laptop seems to be around 256M (which is not very much), whereas your desktop uses something closer to 2GB. That's a bit odd since most of the time, Java automatically sets it to like 1/4 of your total RAM, nonetheless, you can always increase it manually with a command line switch, along the lines of -Xmx2048M for 2GB etc.

Let me know if that fixes the issue.

[BromBromBromley]

When trying to use 2048MB for it on my laptop, it says this:

Error occurred during initialization of VM
Could not reserve enough space for 2097152KB object heap

I noticed there was a version difference between my desktop version and my laptop version of Java as well. I'm partially inclined to think that I might have the 32-bit version of Java on my desktop given that programs that aren't large address aware are capped at 2GB. I was able to use 1024MB all right at least, but I will try looking into the Java mismatch.

[BromBromBromley]

OK, that seems to have been the issue. Installing a 64-bit of Java seemed to have fixed this issue. Thanks for the help!