If your reload engine is killed because of taking too long to save the temporary QVW copy, then there should be a message in the TaskLog.
However, the saving of the QVW is not part of script execution. It comes after the script has been executed successfully, so a General Script Error would be a weird indicator for a failing document save. Probably something else is causing this situation. Can you post the end of your DocumentLog.txt (about 20 lines) and the full TaskLog.txt?