Minecraft Forums

Hi, I am very sorry to be a bother, I did not think this was going to be an issue as it is something i figured out on my own before. When i first tried to open Minecraft when I first got it, I couldn't open it because of the virtual machine error. I found an easy solution that worked just fine until this most recent update, in which it stopped working, even after I installed the new launcher.

What I had working before (and was wondering if there was a way to a maybe do it for the most recent update) was a notepad file that i turned into an MS- DOS Batch file that reads:

java -Xms650m -jar "C:\Documents and Settings\user\Desktop\minecraft.exe

(input user for anonymity- not originally my computer)

I was wondering if there was a way to change this for the most recent update, since it opened the launcher just fine before. Now all it does is opens the launcher, but there is an error when I click "play" the virtual machine error has opened back up, causing me to no longer be able to play.

down below I am going to put the entire log that happens upon launching in case that will help fix the error.

*beginning of tech jargon*

Launcher 1.0.6 (through bootstrap 4) started on windows...
System.getProperty('os.name') == 'Windows XP'
System.getProperty('os.version') == '5.1'
System.getProperty('os.arch') == 'x86'
System.getProperty('java.version') == '1.7.0_25'
System.getProperty('java.vendor') == 'Oracle Corporation'
Going to log in with legacy stored username & password...
Loaded 1 profile(s); selected '(Default)'
Trying to log in...
Logging in with access token
Couldn't go online
net.minecraft.launcher.authentication.exceptions.InvalidCredentialsException: profile b39e8a88450e4dbfa0b12b8d990915f0 does not match user 20909541
at net.minecraft.launcher.authentication.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:123)
at net.minecraft.launcher.authentication.yggdrasil.YggdrasilAuthenticationService.logInWithToken(YggdrasilAuthenticationService.java:97)
at net.minecraft.launcher.authentication.yggdrasil.YggdrasilAuthenticationService.logIn(YggdrasilAuthenticationService.java:50)
at net.minecraft.launcher.ui.sidebar.login.NotLoggedInForm$1.run(NotLoggedInForm.java:158)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

Going to play offline as 'MagicMattt'...
Getting syncinfo for selected version
Queueing library & version downloads
Download job 'Version & Libraries' started (8 threads, 1 files)
Finished downloading C:\Documents and Settings\Desiree Jerome\Application Data\.minecraft\versions\1.6.1\1.6.1.jar for job 'Version & Libraries': Used own copy as it matched etag
Job 'Version & Libraries' finished successfully
Delta time to compare resources: 19382 ms
Download job 'Resources' skipped as there are no files to download
Job 'Resources' finished successfully
Launching game
Looking for old natives to clean up...
Unpacking natives to C:\Documents and Settings\Desiree Jerome\Application Data\.minecraft\versions\1.6.1\1.6.1-natives-83400732069578
Launching in C:\Documents and Settings\Desiree Jerome\Application Data\.minecraft
Running C:\Program Files\Java\jre7\bin\javaw.exe -Xmx1G -Djava.library.path=C:\Documents and Settings\Desiree Jerome\Application Data\.minecraft\versions\1.6.1\1.6.1-natives-83400732069578 -cp C:\Documents and Settings\Desiree Jerome\Application Data\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar;C:\Documents and Settings\Desiree Jerome\Application Data\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar;C:\Documents and Settings\Desiree Jerome\Application Data\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar;C:\Documents and Settings\Desiree Jerome\Application Data\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar;C:\Documents and Settings\Desiree Jerome\Application Data\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar;C:\Documents and Settings\Desiree Jerome\Application Data\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar;C:\Documents and Settings\Desiree Jerome\Application Data\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.0\lwjgl-2.9.0.jar;C:\Documents and Settings\Desiree Jerome\Application Data\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.0\lwjgl_util-2.9.0.jar;C:\Documents and Settings\Desiree Jerome\Application Data\.minecraft\libraries\argo\argo\2.25_fixed\argo-2.25_fixed.jar;C:\Documents and Settings\Desiree Jerome\Application Data\.minecraft\libraries\org\bouncycastle\bcprov-jdk15on\1.47\bcprov-jdk15on-1.47.jar;C:\Documents and Settings\Desiree Jerome\Application Data\.minecraft\libraries\com\google\guava\guava\14.0\guava-14.0.jar;C:\Documents and Settings\Desiree Jerome\Application Data\.minecraft\libraries\org\apache\commons\commons-lang3\3.1\commons-lang3-3.1.jar;C:\Documents and Settings\Desiree Jerome\Application Data\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar;C:\Documents and Settings\Desiree Jerome\Application Data\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar;C:\Documents and Settings\Desiree Jerome\Application Data\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar;C:\Documents and Settings\Desiree Jerome\Application Data\.minecraft\libraries\com\google\code\gson\gson\2.2.2\gson-2.2.2.jar;C:\Documents and Settings\Desiree Jerome\Application Data\.minecraft\versions\1.6.1\1.6.1.jar net.minecraft.client.main.Main --username MagicMattt --session ${auth_session} --version 1.6.1 --gameDir C:\Documents and Settings\Desiree Jerome\Application Data\.minecraft --assetsDir C:\Documents and Settings\Desiree Jerome\Application Data\.minecraft\assets
---- YOU CAN CLOSE THIS LAUNCHER IF THE GAME STARTED OK ----
---- YOU CAN CLOSE THIS LAUNCHER IF THE GAME STARTED OK ----
---- YOU CAN CLOSE THIS LAUNCHER IF THE GAME STARTED OK ----
---- (We'll do this automatically later ;D) ----
Client> Error occurred during initialization of VM
Client> Could not reserve enough space for object heap

*end of tech jargon*

If there is any more information i would need to provide i would be glad to supply it. I know for sure my java is updated completely, and I am windows xp and i dont have too much ram, but that has not been an issue in the past. Thank you so much for your time, also please try to make your response translatable by a non-tech person (seeing as all the things I have put have completely stretched my capacity for tech understanding already) Thank you so much,
MagicMattt (mc username)

Thank you soooo much! you are the best! Is the 650m the amount of memory java is allowing minecraft to use, and if i wanted to raise that number according to my computer's ability, could i change that on the DOS file and the JVM argument and use a little more memory for minecraft?

Yeah i tried, but when I do not use the dos file it says i have a virtual machine error, so I think i will continue to use it, just one last question for you. what percentage of my computer's memory can i allocate to minecraft without error. I believe in total my computer has 1gb of ram and i dont want to mess things up