IBM How can uninstall Data Studio 3.1.1 where Control Panel uninstall process gets an error? - United States  TECHNOTE (FAQ)

QUESTION
 We are able to install Data Studio (DS) 4.1.2 successfully but unable to uninstall the 
existing Data Studio 3.1.1. When uninstall Data Studio 3.1.1 from Control Panel, it 
raises an error message pop-up window and can not uninstall it. Here is the message:

+-------------------------------------------------------------------------
| Java Virtual Machine Launcher
+-------------------------------------------------------------------------
| X Could not find the main class: com.zerog.lax.LAX. Program will exit.
+-------------------------------------------------------------------------

How can uninstall Data Studio 3.1.1 where Control Panel uninstall process gets an error?


CAUSE
It is an known behavior/limitation. 

ANSWER
It may be happened where two versions Data Studio 3.1.1 and 4.1.2 installed machine. 

Here is an workaround. Please try to uninstall all products including Install Manager 
(IM) then reinstall IM and Data Studio 4.1.2. Below are detailed steps:

1. Use IM to uninstall as many packages as possible.

2. Identify the packages that are still installed, and manually clean 
them up.

Example on Windows:
- C:\Program Files\IBM\{IBMIMShared | SDPShared}

3. Delete IBM Installation Manager.

Example on Windows:
- Delete the IM install directory:
C:\Program Files\IBM\Installation Manager\
- Delete the AppData directory (IM Agent Data):
Windows 7: C:\ProgramData\IBM\Installation Manager
- Delete the Windows registry (regedit) entry : 
HKEY_LOCAL_MACHINE\SOFTWARE\IBM\Installation Manager
- re-install IM

4. Reinstall DS 4.1.2 and other products.

Note:
This behavior might be changed without notice in the future. We can confirm whether this technote
is valid or not by following above.
Please contact your Sales Rep to submit a potential design change towards a future release.
Or please open a ticket, Request For Enhancement at https://www.ibm.com/developerworks/rfe/ [https://www.ibm.com/developerworks/rfe/]
Unable to unistall Data Studio 3.1.1 on Windows We use Data Studio 3.1.1.0 with DB2 WSE V9.7 FP11 on Windows 2008. While trying to new version of Data Studio 4.1.2, we are able to install it successfully. But unable to uninstall the existing 3.1.1.0, getting the jvm error "Could not find the main class". Is it a bug or something?

It may be happened where two versions Data Studio 3.1.1 and 4.1.2 installed machine.