Based on the info there, we've obtained these results: 1. alert0.txt is generated in D:\SiteScope\scripts 2. alert.log registers "alert-message: SendOVOCritical.exe (255)" successfully 3. template is set to default. This is supposed to resolve the issue, but it doesn't.
However, we've hit the wall here since point 3 doesn't resolve the problem. We have this error message:
Testing alert... At least one action did not execute. See summary below.