t.__m_onclick (Cannot make exe. Error 4, failed to compile.)

[Gintaras]

Something wrong with your System folder, because in QM 2.2.0 TrayWndProc code is different.

If your System folder is without S in the folder icon, delete it, check 'Always Add System' in Options/Files, and restart QM. Also, try the 'Check extensions' button in Options/General.