Any one can help with my problem, every time i try to install some java game to my 6600 it will pop up an error 'app. closed Chilinstaller'.

any solution???

Does this happen with all apps? I had the very same problem (along with many others). A full hard format solved it for me. But do u have this problem with all apps or only a specific one?

Install the filemanager
like seleq
go to c:/ system / bootdata / and delete the first boot dat file <the file is 0 bytes>

Deleting the First Boot Dat file is the best way to eradicate this problem

Regards.

Sajjas

Yes I agree with blizzardtwice.
I deleted so many times the Firstboot dat but it didn't fixed the 'Application Closed Main'.

What happened is you installed a corrupted app...(most likely some java app from my experience)

you will have to remove that app manually using FExplorer or any other file manager app (remove it completely as much as you can) before phone operation will resume.. (removing it in "Manager" won't work!)

its best if you actually know which app this is (most likely the last one you installed before the ChildInstaller error began), but if you dont then you'll have to remove them all or one by one till you find it...

its also mentioned in the Symbian FAQs section (why doesnt anyone read this section? it solves so many problems people experience! yet people still ask!!!)
click HERE for the page