# Technology tree bug

**URL:** <https://forums.ageofempires.com/t/technology-tree-bug/57530>\
**Category:** I - Report a Bug\
**Created:** [October 19, 2019, 5:26am UTC](https://forums.ageofempires.com/t/technology-tree-bug/57530 "2019-10-19T05:26:06Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![AlienatedZero15](https://forums.ageofempires.com/user_avatar/forums.ageofempires.com/alienatedzero15/32/29254_2.png) [@AlienatedZero15](https://forums.ageofempires.com/u/AlienatedZero15)\
**Post date:** [October 19, 2019, 5:26am UTC](https://forums.ageofempires.com/t/technology-tree-bug/57530/1 "2019-10-19T05:26:06Z")

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After checking the tech tree, I am not able to select any units. At this point, the campaign needs a restart.

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**Author:** ![AssessedNebula4](https://forums.ageofempires.com/letter_avatar_proxy/v4/letter/a/f0a364/32.png) [@AssessedNebula4](https://forums.ageofempires.com/u/AssessedNebula4)\
**Post date:** [October 19, 2019, 2:43pm UTC](https://forums.ageofempires.com/t/technology-tree-bug/57530/2 "2019-10-19T14:43:09Z")

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Happened to me in the middle of the game after like 5th check of my tree

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**Author:** ![Sparta7236](https://forums.ageofempires.com/user_avatar/forums.ageofempires.com/sparta7236/32/53221_2.png) [@Sparta7236](https://forums.ageofempires.com/u/Sparta7236)\
**Post date:** [October 19, 2019, 6:06pm UTC](https://forums.ageofempires.com/t/technology-tree-bug/57530/3 "2019-10-19T18:06:45Z")

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Happened to me too.

To fix this, re-open the tech tree and select another civ.

Then close and you will be able to play again.

Have fun!

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**Author:** ![guaould](https://forums.ageofempires.com/user_avatar/forums.ageofempires.com/guaould/32/32378_2.png) [@guaould](https://forums.ageofempires.com/u/guaould)\
**Post date:** [October 20, 2019, 12:07pm UTC](https://forums.ageofempires.com/t/technology-tree-bug/57530/4 "2019-10-20T12:07:26Z")

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I came here to report the same issue.

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**Author:** ![DLordPenguin](https://forums.ageofempires.com/user_avatar/forums.ageofempires.com/dlordpenguin/32/29229_2.png) [@DLordPenguin](https://forums.ageofempires.com/u/DLordPenguin)\
**Post date:** [October 20, 2019, 3:52pm UTC](https://forums.ageofempires.com/t/technology-tree-bug/57530/5 "2019-10-20T15:52:58Z")

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In a game I couldn’t do any type of click on the screen after looking at the tech tree, although I could move the mouse around and the hotkeys on the keyboard worked perfectly. After going to the options menu I could click things again