Hi everyone....

I seem to be encountering this strange error while rigging... as you can see the attached picture, there are some strange spear like protrusions which appear as i try to paint skin weights, using paint operation: replace...
i have tried to smooth them out as well, but it doesnt seem to work.
i cant figure out the reason this i s happening and thereby cannot seem to correct this error!

pleeeasssseee heeellllppp!