# Assertion Fail when Tpu is started

**URL:** <https://tech-community.robotics.abb.com/t/assertion-fail-when-tpu-is-started/3083>\
**Category:** RobotStudio S4\
**Created:** [October 1, 2009, 12:25pm UTC](https://tech-community.robotics.abb.com/t/assertion-fail-when-tpu-is-started/3083 "2009-10-01T12:25:00Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![JuanPortas](https://avatars.discourse-cdn.com/v4/letter/j/df705f/32.png) [@JuanPortas](https://tech-community.robotics.abb.com/u/JuanPortas)\
**Post date:** [October 1, 2009, 12:25pm UTC](https://tech-community.robotics.abb.com/t/assertion-fail-when-tpu-is-started/3083/1 "2009-10-01T12:25:00Z")

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Hi,

I canA’t work with the teach pendant of the Quick Teach, when it start is produce a assertion fail and no is possible do nothing. ☹  
You can see the fail in file. The version QuickTeach is 5.5. Copilacion 2461.  
You can help me?  
Thank you

[webwiz/3093/Assertion\_failed.JPG](http://forums.robotstudio.com/webwiz/3093/Assertion_failed.JPG)

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**Author:** ![AndersJ](https://avatars.discourse-cdn.com/v4/letter/a/f14d63/32.png) [@AndersJ](https://tech-community.robotics.abb.com/u/AndersJ)\
**Post date:** [October 1, 2009, 3:26pm UTC](https://tech-community.robotics.abb.com/t/assertion-fail-when-tpu-is-started/3083/2 "2009-10-01T15:26:35Z")

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Hello,

Try the same system, but with new key.id.

In Virtual Robot Browser:

- Select system
- Click Properties
- Click Finish  
=\> A new key.if file is generated.

Hopefully this will solve the problem so now try the system again.

If not, try to create a new system and try with that one.

Best regards,  
Anders Jahnberg, ABB Robotics