FULL PRODUCT VERSION :
C:\Windows\system32>java -version
java version "1.7.0_45"
Java(TM) SE Runtime Environment (build 1.7.0_45-b18)
Java HotSpot(TM) 64-Bit Server VM (build 24.45-b08, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
All Windows Desktop and Server versions, 2003 to current release

A DESCRIPTION OF THE PROBLEM :
The JRE MSI for the 32 and 64 bit versions need to have the following entries corrected:
In the CustomAction table, Action UninstallJRE
 - Current Target: rundll32.exe "[bin]\installer.dll",UninstallJREEntryPoint
 - Corrected Target: rundll32.exe "[bin]installer.dll",UninstallJREEntryPoint

Variable [bin] already has a trailing backslash, so the backslash ahead of installer.dll is unnecessary and in fact causes the uninstall to fail with the error:

"There was a problem starting C:\Program Files (x86)\Java\jre7\bin\\installer.dll
The specified module could not be found"


REGRESSION. Last worked in version 6u43

ADDITIONAL REGRESSION INFORMATION:
C:\Windows\system32>java -version
java version "1.7.0_45"
Java(TM) SE Runtime Environment (build 1.7.0_45-b18)
Java HotSpot(TM) 64-Bit Server VM (build 24.45-b08, mixed mode)

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Install a previous version of JRE 7, one older that 1.7.0_45.
Then install version 1.7.0_45 on top of the previous version.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The installer should be looking for the correct path to find the uninstaller for the previous version.
ACTUAL -
Error message generated:

"There was a problem starting C:\Program Files (x86)\Java\jre7\bin\\installer.dll
The specified module could not be found"

ERROR MESSAGES/STACK TRACES THAT OCCUR :
"There was a problem starting C:\Program Files (x86)\Java\jre7\bin\\installer.dll
The specified module could not be found"

REPRODUCIBILITY :
This bug can be reproduced always.

CUSTOMER SUBMITTED WORKAROUND :
Workaround it to edit the MSI and fix the following entry"
CustomAction table, Action UninstallJRE
 - Current Target: rundll32.exe "[bin]\installer.dll",UninstallJREEntryPoint
 - Corrected Target: rundll32.exe "[bin]installer.dll",UninstallJREEntryPoint