FULL PRODUCT VERSION :
Before JRE crashes:

java version "1.6.0_24"
Java(TM) SE Runtime Environment (build 1.6.0_24-b07)
Java HotSpot(TM) Client VM (build 19.1-b02, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [ 5.1.2600]

A DESCRIPTION OF THE PROBLEM :
1. add "security.provider.10=com.test.Provider" to java.security file
2. run update
3. update shows the warning "lib\security\java.security: Old File not found...." and after finish JRE can't work. If we run java.exe the following dialog appear:
"The procedure entry point _JVM_LoadSystemLibrary@4 could not be located in dynamic link library jvm.dll"

REGRESSION.  Last worked in version 6u26

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. add "security.provider.10=com.test.Provider" to java.security file
2. run update
3. update shows the warning "lib\security\java.security: Old File not found...." and after finish JRE can't work. If we run java.exe the following dialog appear:
"The procedure entry point _JVM_LoadSystemLibrary@4 could not be located in dynamic link library jvm.dll"


ERROR MESSAGES/STACK TRACES THAT OCCUR :
1. add "security.provider.10=com.test.Provider" to java.security file
2. run update
3. update shows the warning "lib\security\java.security: Old File not found...." and after finish JRE can't work. If we run java.exe the following dialog appear:
"The procedure entry point _JVM_LoadSystemLibrary@4 could not be located in dynamic link library jvm.dll"

REPRODUCIBILITY :
This bug can be reproduced always.

Release Regression From : 6u25
The above release value was the last known release where this 
bug was not reproducible. Since then there has been a regression.

Release Regression From : 6u26
The above release value was the last known release where this 
bug was not reproducible. Since then there has been a regression.