Windows-TaskSchedule | Windows下的任务调试框架， | Cron Utils library

You may want to clear out the $start and $end variables just to ensure values aren't being carried over from the previous group. This might reveal which record(s) are causing the error(s). I was not able to duplicate the issue. Depending on amount of entries you're processing it might also be beneficial to filter out the taskname prior to grouping. Finally, it's slightly faster to use the [PSCustomObject] type accelerator instead of New-Object. I've made a couple of adjustments to your code in the first example and then a slightly different version of the same thing following that.

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