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Java update won't let VASSAL launch

Issues with the Vassal engine.

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Re: Java update won't let VASSAL launch

Postby uckelman » July 23rd, 2016, 9:42 am

Check whether you still have an older version of java installed. If so, remove it. If not, check whether an older version of Java left stale keys in the registry. If so, remove those. The problem is one of those two things.
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Re: Java update won't let VASSAL launch

Postby uckelman » July 25th, 2016, 11:02 pm

Check whether you still have an old version of Java installed. The Java installer on Windows is horrible about leaving old major versions installed, which can prevent the newer major version from working. Remove any old versions you find.
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Re: Java update won't let VASSAL launch

Postby jimpyle » July 25th, 2016, 11:08 pm

Hi Joel,

I started having other problems and ended up getting a new PC. The old one had several years on it.

Jim
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Re: Java update won't let VASSAL launch

Postby RobS » July 25th, 2016, 11:43 pm

jimpyle wrote:I'm still having the problem

Windows 7 - Home Premium

Java 8 Update 101

Help!!!

Same here.
Running Win7 Home Premium, 32-bit.
Java Version 8 Update 101.
No old versions of Java.
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Re: Java update won't let VASSAL launch

Postby uckelman » July 26th, 2016, 9:43 am

If you're still having a problem after verifying that you have no older versions of Java installed, then you need to check the registry for stale keys leftover from the previous version of Java, and remove those.
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Re: Java update won't let VASSAL launch

Postby Blackcloud6 » July 26th, 2016, 3:02 pm

If you're still having a problem after verifying that you have no older versions of Java installed, then you need to check the registry for stale keys leftover from the previous version of Java, and remove those.


Neither of these work. I check for older versions of java and there are none on my machine. I ran a complete registry scan and clean all old registry files, rebooted and get the same error.
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Re: Java update won't let VASSAL launch

Postby Blackcloud6 » July 26th, 2016, 3:24 pm

OK, the way I fixed this was to completely uninstall Java. Then run a registry cleaner and clean out the java entries that it found. Then I rebooted. Then reinstalled the latest Java, rebooted, and then ran Vassal and it worked.
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Re: Java update won't let VASSAL launch

Postby JamesPaul » July 27th, 2016, 12:51 am

I let the online Java installer install the 1.8 101 update and remove the previous version. Then I experienced this issue.

The machine involved is Windows 7 Home Premium 64-bit.

I installed the 64-bit Java 1.8 101 update using the offline Java installer and this resolved the issue for me. It appears the online Java installer only installs 32-bit and removes both the old 32-bit and the old 64-bit Java.
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Re: Java update won't let VASSAL launch

Postby derekrledr » July 27th, 2016, 1:39 am

Thank you, JamesPaul. I followed your instructions and resolved the issue on my computer. Mine uses Windows 7 Pro, 64 bit.
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Re: Java update won't let VASSAL launch

Postby RobS » July 27th, 2016, 1:32 pm

JamesPaul wrote:I installed the 64-bit Java 1.8 101 update using the offline Java installer and this resolved the issue for me. It appears the online Java installer only installs 32-bit and removes both the old 32-bit and the old 64-bit Java.

Yet, I'm running Win7 Home Premium 32-bit, and Vassal isn't working.
(Also, I'm not touching anything having to do with the registry, as that level of sorcery is beyond my tech ability.)
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Re: Java update won't let VASSAL launch

Postby greenknight » July 27th, 2016, 2:11 pm

The latest Java update killed Vassal:

Windows 10 Pro

Java 8 Update 101
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Re: Java update won't let VASSAL launch

Postby uckelman » July 27th, 2016, 4:23 pm

Thus spake RobS:
>
> "JamesPaul" wrote:
> > I installed the 64-bit Java 1.8 101 update using the offline Java
> > installer and this resolved the issue for me. It appears the online
> > Java installer only installs 32-bit and removes both the old 32-bit
> > and the old 64-bit Java.
>
> Yet, I'm running Win7 Home Premium 32-bit, and Vassal isn't working.
> (Also, I'm not touching anything having to do with the registry, as that
> level of sorcery is beyond my tech ability.)

You can't run 64-bit Java on a 32-bit system. If the installer even
lets you install it, that's a serious flaw.

--
J.
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Re: Java update won't let VASSAL launch

Postby RobS » July 27th, 2016, 10:46 pm

uckelman wrote:Thus spake RobS:
You can't run 64-bit Java on a 32-bit system. If the installer even
lets you install it, that's a serious flaw.

I'm not running the 64-bit Java.
I was pointing out that if the Java installer installs the 32-bit version, it nevertheless isn't working for me, since my system is 32-bit.
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Re: Java update won't let VASSAL launch

Postby uckelman » July 27th, 2016, 11:02 pm

Thus spake RobS:
> [This message has been edited.]
>
>
> "uckelman" wrote:
> > Thus spake RobS:
> > You can't run 64-bit Java on a 32-bit system. If the installer even
> > lets you install it, that's a serious flaw.
>
> I'm not running the 64-bit Java.
> I was pointing out that if the Java installer installs the 32-bit
> version, it nevertheless isn't working for me, since my system ___is___
> 32-bit.
>

If you're still having a problem, the things to do are (1) verify
that you don't have multiple versions of Java installed, and (2)
check that you don't still have registry keys from old versions.

The relevant registry keys are

HKLM\SOFTWARE\JavaSoft\Java Runtime Environment\CurrentVersion

and

HKLM\SOFTWARE\JavaSoft\Java Runtime Environment\$CurrentVersion\JavaHome

where $CurrentVersion is the value of

HKLM\SOFTWARE\JavaSoft\Java Runtime Environment\CurrentVersion

If you have this problem and you have only one version of Java
installed, it's likely that one of these registry keys is wrong.

--
J.
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Re: Java update won't let VASSAL launch

Postby RobS » July 28th, 2016, 4:20 pm

I'll just wait until the next update, as I'm not playing any games at the moment anyway.
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