C++ std::list segmentation fault on clear and begin

I'm having a Segmentation Fault when I call .begin() or .clear() on a std::list.

I'm working on a list which has a simple goal: to store some GUI elements that have to be freshened up.

The list is as follows:

list<ControllableUI*> uiToRefresh;

The functions acting on it are:

void SynthEngine::addUIToRefresh(ControllableUI* ui){
    uiToRefresh.push_back(ui);
}

void SynthEngine::removeUIToRefresh(ControllableUI* ui){
    list<ControllableUI*>::iterator i;

    for(i=uiToRefresh.begin(); i != uiToRefresh.end();){
        if((*i) == ui){
            i = uiToRefresh.erase(i);
        }
        else {
            ++i;
        }
    }
}

void SynthEngine::refreshUI(){
    list<ControllableUI*>::iterator i;

    for(i=uiToRefresh.begin(); i != uiToRefresh.end();){
        (*i)->refresh();
        i = uiToRefresh.erase(i);
    }
}

I'm calling removeUIToRefresh() whenever a UI component is deleted, to be sure it wont be called and start a segmentation fault, but it is this call that sends this error:

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffefb4a700 (LWP 24071)]
0x00000000004a948e in std::list::begin (this=0x45a8) at /usr/include/c++/4.9/bits/stl_list.h:772 772 { return iterator(this->_M_impl._M_node._M_next); }

Are there some obvious reasons that can throw a segmentation fault using lists?

via Chebli Mohamed