OK! found a workaround... cut the IF block at line 886 (i used notepad++) into file installer.js if (RegKeyValue("HKEY_CURRENT_USER\\Software\\WPI\\SndInstallFinishCB")) { document.getElementById("MediaPlayer").controls.stop(); document.getElementById("MediaPlayer").url=""; PlaySound(RegKeyValue("HKEY_CURRENT_USER\\Software\\WPI\\SndInstallFinish")); } Pause(3,0); and paste it at line 856 and now WORKS! the problem is generated by this: DeleteAllRegKeys(); if (!UserAborted && !ReturnCodeReboot) { DeleteRebootFile(); DeleteHistoryFile(); RestartComputer=RegKeyValue("HKEY_CURRENT_USER\\Software\\WPI\\RestartComputer"); RestartType=RegKeyValue("HKEY_CURRENT_USER\\Software\\WPI\\RestartType"); WriteRegKey("HKEY_CURRENT_USER\\Software\\WPI\\ResumeInstall",0,"REG_DWORD"); >>>>>>>DeleteAllRegKeys();<<<<<<<<<< } else { RestartComputer=false; // Yes? }