I'm seeing some complaints about 6.2, also. Guessing BB will have another update out shortly (hopefully).
Some things to try/check in the meantime: 1) try a battery pull reboot 2) if 1) didn't work then check your BB OS version. The quickest way is to type "m-y-v-e-r<space>". Maybe you need to upgrade your OS. My version info is 9300/18.104.22.1686 and I saw my icon fine after the BBM 6.2 upgrade. 3) If all else fails, roll back to the last version of BBM via the Desktop Manager on the PC you sync/backup too.