no match for 'operator=' in 'it.__gnu_cxx::__normal_iterator

[rilesdg3]

I am using Code Blocks on Ubuntu and I am getting the following error

no match for 'operator=' in 'it.__gnu_cxx::__normal_iterator.........


vector<vector<string> > SortVect;
vector<string>::iterator it;// = SortVect.begin();
for(it = SortVect.begin(); it != SortVect.end();it++)
{

}

thank you

[Moschops]

vector<vector<string> > SortVect;
vector<vector<string> >::iterator it;// = SortVect.begin();
for(it = SortVect.begin(); it != SortVect.end();it++)
{

}