opera mini on treo 800?

[SRT 10]

I installed esmertecjbed2...(java) and opera mini. I launch the program from the java icon & it work perfectly. I actually like it better than opera 9.5 on my touch. After i change to my second battery or if I perform a soft reset, it disappears. Then I re-install it & it keeps happening. I tried installing the opera mini to both the card as well as to the phones memory same issue. Is this common, help.