Re: Java plugin error
From: zoopy (zoopy_at_hates.spam)
Date: 08/26/04
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Date: Thu, 26 Aug 2004 18:53:55 +0200
On 26-8-2004 16:37, Christoph wrote:
>>Some questions:
>
>
> Sorry for not including all this information in the first place. My
> bad.
>
>
>>- Which browser are you using?
>
>
> IE 6.0.2800.1106.xpsp2.030422-1633
>
>
>>- On which OS?
>
>
> WindowsXP w/SP1
>
>
>>- Did you have a previous version of Sun's Java installed?
>
>
> No. I uninstalled all versions of Java after the first time I received the
> error I described.
>
>
>>- What does the command "java -version" print when you run it from the
>
> command-line?
>
> c:\>java -version
> java version "1.4.2_05"
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_05-b04)
> Java HotSpot(TM) Client VM (build 1.4.2_05-b04, mixed mode)
>
That's fine.
[
If it wasn't, an error message like the following could have been printed:
Error opening registry key 'Software\JavaSoft\Java Runtime Environment\1.4'
Error: could not find java.dll
Error: could not find Java 2 Runtime Environment.
]
>
>>You could try to set/reassign your browser in the Java Control Panel.
>
>
> You are talking about the "Java Plug-In" item in my Windows Control
> Panel?
Yes
> If so, here's something interesting. When I went to run it, I get
> the error
>
> "The system cannot find the registry key specified:
>
> HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Plug-in\1.4.2_03"
Yep, that seems a problem with the installation or whith the registry.
Apparently that registry key isn't there any more, from which you could
conclude that uninstall of 1.4.2_03 successfully removed its registry
entries.
>
> Likly I'm getting that error because I uninstalled 1.4.2_03.
Could be, but I'm also thinking that there still could be a control
panel of version 1.4.2_03 hanging around. The Java control panel is a
file with the name 'jpicpl32.cpl'. Maybe it wasn't removed during the
uninstall ('cause it was in use or locked, or the uninstall process
didn't have sufficient access rights).
The reason why I think that it could be an old version of jpicpl32.cpl,
is that the registry key is "hardcoded" in that file, and therefore you
see the error message above.
On my computer [Win2000], jpicpl32.cpl is located in
C:\WINNT\system32\jpicpl32.cpl (although I have JRE1.5.0b2 installed).
You could do a search for that file in C:\WINNT\* (or is it C:\WINDOWS\
for XP?).
If found, display the properties of the file (right-click/properties),
and check the file version on the "Version" tab. If it displays 1.4.2_03
then you found the culprit.
But it could be very well that the suffix _03 is not there, but only a
number like 1.4.2.0 (that is the case on my computer for the JRE 1.4.2
version I did'nt uninstall, 1.5.0.0 for cpl of my latest JRE). If that
is the case, and you really want to be sure that is the _03 cpl, you
could open the file in a hexviewer (if you have one), or in notepad.
Then search for the string "SOFTWARE\JavaSoft\Java Plug-in\1.4.2_03". If
it's there, then jpicpl32.cpl is the control panel of the previous version.
If you found an old version of jpicpl32.cpl (in WINNT\* or any other
folder), you could delete it (well renaming it to jpicpl32.cpl.old is
safer; I'm not taking responsibility for any problems that any of these
actions may cause ;-) ). Then try to reinstall the _05 version again.
> But why wasn't
> the control panel entry installed for 1.4.2_03 when I installed it?
1.4.2_05 you probably mean
Don't know, but it could be that the jpicpl32.cpl of 1.4.2_03 could not
be overwritten/replaced by the 1.4.2_05 version (again, maybe because it
was in use or locked, or the install process didn't have sufficient
access rights)
-- Regards, Z.
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