i have just done some more testing,

3rd test site,

installed IH2
configured and working fine

installed captcha-number-subject-combo-in-one-1.0
configured and working fine

then looked into the IH2 admin part and the same happened, it was uninstalled...
I clicked on install IH2 then adds additional images to a test product, but it works..

ARGH! haha, i hate life sometimes!!

why?.. hope someone can give, give guidance!!