# Error on Driver S71500

**URL:** <https://forum.inductiveautomation.com/t/error-on-driver-s71500/41899>\
**Category:** Ignition\
**Tags:** ignition80\
**Created:** [January 2, 2021, 2:55pm UTC](https://forum.inductiveautomation.com/t/error-on-driver-s71500/41899 "2021-01-02T14:55:34Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![matteo.giussani](https://avatars.discourse-cdn.com/v4/letter/m/b9bd4f/32.png) [@matteo.giussani](https://forum.inductiveautomation.com/u/matteo.giussani)\
**Post date:** [January 2, 2021, 2:55pm UTC](https://forum.inductiveautomation.com/t/error-on-driver-s71500/41899/1 "2021-01-02T14:55:34Z")

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E [d.S71500Driver] [10:34:32]: No optimized AddressBlock list found for items:

I found out this error that randomly appear… when this appear i have to reboot the gateway and i can’t control nothing. Any suggestion? can be linked with the TagChange scripts?

Please it’s urgent and i need to solve, i’ve a production plant running.

Bests

Matteo

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**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [January 2, 2021, 3:27pm UTC](https://forum.inductiveautomation.com/t/error-on-driver-s71500/41899/2 "2021-01-02T15:27:07Z")

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> [@matteo.giussani](#):
>
> i’ve a production plant running

Call support.