Help with error in server please

[mama020153]

My MSG server just keeps shutting down and when i look in to the log the only error i find is
23:45:23 ERROR: ¡ïCHECKF(nCellY >= 0 && nCellY < m_sizeMap.cy)¡ï in E:\tq_digital\ħÓò\pm_version\develop\src\MapData\ source\MapData.cpp, 777
23:45:23 ERROR: ¡ïCHECK(ptr)¡ï in E:\tq_digital\ħÓò\pm_version\develop\src\MapData\ source\MapData.h, 76

cant seem to put my finger to the right spot to solve this one...