# Alarm pipeline notification block edit error

**URL:** <https://forum.inductiveautomation.com/t/alarm-pipeline-notification-block-edit-error/20485>\
**Category:** Ignition\
**Created:** [November 1, 2018, 4:44pm UTC](https://forum.inductiveautomation.com/t/alarm-pipeline-notification-block-edit-error/20485 "2018-11-01T16:44:26Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![PearceJ](https://avatars.discourse-cdn.com/v4/letter/p/edb3f5/32.png) [@PearceJ](https://forum.inductiveautomation.com/u/PearceJ)\
**Post date:** [November 1, 2018, 4:44pm UTC](https://forum.inductiveautomation.com/t/alarm-pipeline-notification-block-edit-error/20485/1 "2018-11-01T16:44:26Z")

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I am having trouble with the notification block - I cannot edit it in my pipelines anymore.

I had to update just the voice and alarm pipelines to fix another issue but i’m not sure if that is the root of my problem - the problem started after the update.

when I click on the notification block in the designer, I receive this error:

```auto
ExecutionException: java.lang.NoClassDefFoundError: com/inductiveautomation/ignition/client/util/gui/DebouncedCatchAllListener
	caused by NoClassDefFoundError: com/inductiveautomation/ignition/client/util/gui/DebouncedCatchAllListener

Ignition v7.9.3 (b2017060210)
Java: Oracle Corporation 1.8.0_151

```

My modals are as follows:  
Alarm Notification 4.9.9 (b2018081614) Activated RUNNING  
Modbus Driver 5.9.3 (b2017060210) Activated RUNNING  
OPC-UA 4.9.3 (b2017060210) Activated RUNNING  
Reporting 4.9.3 (b2017060210) Activated RUNNING  
SMS Notification 4.9.6 (b2018012914) Activated RUNNING  
SQL Bridge 8.9.3 (b2017060210) Activated RUNNING  
Symbol Factory 5.9.3 (b2017060217) Activated LOADED  
TTS Voice - en\_us\_katherine 3.8.2 (b0) Activated RUNNING  
Tag Historian 2.9.3 (b2017060210) Activated RUNNING  
UDP and TCP Drivers 4.9.3 (b2017060217) Activated RUNNING  
User Manual 4.9.3 (b2017060217) Free RUNNING  
Vision 9.9.3 (b2017060217) Activated RUNNING  
Voice Notification 4.9.9 (b2018081622)

PS. It is just the notification block that is causing the error.

thanks for reading

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<div class="post-metadata">

**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\
**Post date:** [November 1, 2018, 5:05pm UTC](https://forum.inductiveautomation.com/t/alarm-pipeline-notification-block-edit-error/20485/2 "2018-11-01T17:05:11Z")

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> [@PearceJ](#):
>
> I had to update just the voice and alarm pipelines to fix another issue but i'm not sure if that is the root of my problem - the problem started after the update.

That's definitely the source of the problem. The class that's missing was added in 7.9.4. I'm not sure why you upgraded just those two modules, but you'll have to upgrade the platform/all modules to get the pipelines to work properly.

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<div class="post-metadata">

**Author:** ![PearceJ](https://avatars.discourse-cdn.com/v4/letter/p/edb3f5/32.png) [@PearceJ](https://forum.inductiveautomation.com/u/PearceJ)\
**Post date:** [November 1, 2018, 5:24pm UTC](https://forum.inductiveautomation.com/t/alarm-pipeline-notification-block-edit-error/20485/3 "2018-11-01T17:24:17Z")

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Thanks, will do - I figured as much. The upgrade was a quick fix i didn’t have time to upgrade the rest.