Problem Description : JPI Control panel icon is missing in upgrade Dirty installation

Tested_Java_Release : PIT Build 08 for 1.4.2 (mantis)
Tested_Java_Release : Hopper FCS
Tested_Build : J2RE.exe
Tested_Build_Location : /net/sqesvr/deployment3/mantis/JPI-PIT-08/build3
Test_Location : Install Tests
Tested_Machine_Name : lemonade 1 , jdsqe-lab1 , dnm-101
Testted O/S : Windows XP, Windows 2000, WIndows 98
Tested_ Browsers : IE / NS
 
Steps to Reproduce :
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1.) Install the hopper j2re.exe from the above mentioned location
2.) check the JPI Control panel is installed for 141.
2.) Instal mantis pit08 j2re from the above mentioned location
3.) check the JPI Control panel is installed for 142.
4.) Now un-install mantis
5.) JPI Control panel icon is missing from the control panel -> settings box