# RS 5 modeling problem

**URL:** <https://tech-community.robotics.abb.com/t/rs-5-modeling-problem/795>\
**Category:** RobotStudio\
**Created:** [August 1, 2006, 11:11pm UTC](https://tech-community.robotics.abb.com/t/rs-5-modeling-problem/795 "2006-08-01T23:11:46Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![sturner](https://dub1.discourse-cdn.com/flex005/user_avatar/tech-community.robotics.abb.com/sturner/32/3432_2.png) [@sturner](https://tech-community.robotics.abb.com/u/sturner)\
**Post date:** [August 1, 2006, 11:11pm UTC](https://tech-community.robotics.abb.com/t/rs-5-modeling-problem/795/1 "2006-08-01T23:11:46Z")

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When I have been intersecting entities and attempt an undo, the origionals are missing and an error appears which will close the application when acknowledged.

I seem to remember this happening in 5.06… am I doing something wrong?

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**Author:** ![Anders\_S](https://avatars.discourse-cdn.com/v4/letter/a/ce7236/32.png) [@Anders\_S](https://tech-community.robotics.abb.com/u/Anders_S)\
**Post date:** [August 15, 2006, 5:20pm UTC](https://tech-community.robotics.abb.com/t/rs-5-modeling-problem/795/2 "2006-08-15T17:20:03Z")

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What version of RobotStudio are you using, 5.07 or 5.07.01?

Does it happened every time with all entities, or is it some specific entities you have problem with?

I have tried to reproduce your problem in RS 5.07.01, but it works for me.