Same problem, when I want make a graph, the qtiplot is crash...
k@k:~$ qtiplot
QPainter::begin: Cannot paint on a null pixmap
QPainter::setRenderHint: Painter must be active to set rendering hints
QPainter::setPen: Painter not active
QPainter::setBrush: Painter not active
QPainter::setBrush: Painter not active
QPainter::setPen: Painter not active
QPainter::setPen: Painter not active
QPainter::setPen: Painter not active
QPainter::end: Painter not active, aborted
qtiplot: symbol lookup error: qtiplot: undefined symbol: _ZNK14QwtScaleEngine8hiMarginEv
Same problem, when I want make a graph, the qtiplot is crash...
k@k:~$ qtiplot :setRenderHint: Painter must be active to set rendering hints ngine8hiMarginE v
QPainter::begin: Cannot paint on a null pixmap
QPainter:
QPainter::setPen: Painter not active
QPainter::setBrush: Painter not active
QPainter::setBrush: Painter not active
QPainter::setPen: Painter not active
QPainter::setPen: Painter not active
QPainter::setPen: Painter not active
QPainter::end: Painter not active, aborted
qtiplot: symbol lookup error: qtiplot: undefined symbol: _ZNK14QwtScaleE