we use MSI-Technology to distribute J2RE. The Problem ist wehen downgrading from 1.5.0_XX to 1.4.2_XX. It doesnt work. When installing 1.4.2_XX an 1.5.0_XX and after that deinstalling 1.5.0_XX, 1.4.2_XX doesnt work and it not get recognized at the sun testpage.

The downgrade from 1.6.0_XX to 1.5.0_XX makes no problems.

Also when i reinstall 1.4.2_XX with the original exe ist makes no problems, but when installing per MSI after deinstall 1.5.0_XX it doesn´t work.

Does anyone have a suggestion to solve this problem?

Thanks al lot
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I appreciate that English may not be your first language but you need to be specific in your question. When you say "it doesn't work" what do you mean? Is it that the MSI fails and installs nothing or, as I suspect, that the version of JRE being used is wrong?
Answered 10/24/2007 by: VBScab
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you´re right. English ist not my first language and i know, that my english ist not very good, but i will try to describe the problem, so you maybe can help me.

"Doesn´t work" means: The applet is not recodnized at
and also from all internal java applications.
But i can see the icon in the control panel and i can open and configure it.
When i install 1.4.2_XX with the msi againt, the problem remanins, when i install with the exe File the problem disappear.

for example: Installing 1.4.2_03_XX, then installing 1.5.0_XX. After that downgrading, that means deinstal of 1.5.0_XX, than 1.4.2_XX doesn´t work.
When i try the same with the original java-exe_File (not with the msi as before), it works without problems.
The problem appear with any versions from 1.4.2 and 1.5.0, so i think there ist a difference between installing java with the MSI-File and the EXE-File.
Maybe the deinstallation of 1.5.0_XX deregister some dlls from 1.4.2_XX? I don´t know, but there are some knowledge base articels an the sun homepage with similar problems deinstallaing 1.4.2_XX and after that 1.3.1 doesn´t work.

I hope you understand what i mean, although my english ist not so good. I´m from german and i responsable for distributing the Java applet for app. 30.000 Clients.

Thanks a lot.
Answered 10/24/2007 by: feivelmaus67
Yellow Belt

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In situations like this, where my install results in an inoperative applications which then gets fixed by running the vendor's install, I always do the same thing - I just capture the difference. I don't use the MSI authoring tool for that but a snapshot utility called In Control. This produces a text or HTML file of the differences. You can obviously use your own tool which records file & registry changes.

- run your MSI
- start the snapshot tool
- run the vendor install
- add the *relevant* differences to your MSI
Answered 10/25/2007 by: VBScab
Red Belt

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Hi Michael,
are you by any chance using Firefox to test this? If yes, See:
Regards, Nick
Answered 10/29/2007 by: nheim
Tenth Degree Black Belt

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