# Tui: issues with urwid 2.6.2 and 2.6.3 - RESOLVED - upgrade to 2.6.4

**URL:** <https://cylc.discourse.group/t/tui-issues-with-urwid-2-6-2-and-2-6-3-resolved-upgrade-to-2-6-4/900>\
**Category:** Cylc Announce\
**Created:** [February 21, 2024, 10:22am UTC](https://cylc.discourse.group/t/tui-issues-with-urwid-2-6-2-and-2-6-3-resolved-upgrade-to-2-6-4/900 "2024-02-21T10:22:22Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![oliver.sanders](https://yyz2.discourse-cdn.com/free1/user_avatar/cylc.discourse.group/oliver.sanders/32/110_2.png) [@oliver.sanders](https://cylc.discourse.group/u/oliver.sanders)\
**Post date:** [February 21, 2024, 10:22am UTC](https://cylc.discourse.group/t/tui-issues-with-urwid-2-6-2-and-2-6-3-resolved-upgrade-to-2-6-4/900/1 "2024-02-21T10:22:22Z")

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Recent releases of the Urwid library used by Cylc Tui (the terminal version of the GUI), have unfortunately caused problems resulting in an immediate crash on launch.

We are investigating this and should have a fix before too long, in the mean time, if Tui has become broken for you, please downgrade to urwid 2.6.1.

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**Author:** ![oliver.sanders](https://yyz2.discourse-cdn.com/free1/user_avatar/cylc.discourse.group/oliver.sanders/32/110_2.png) [@oliver.sanders](https://cylc.discourse.group/u/oliver.sanders)\
**Post date:** [February 21, 2024, 4:51pm UTC](https://cylc.discourse.group/t/tui-issues-with-urwid-2-6-2-and-2-6-3-resolved-upgrade-to-2-6-4/900/2 "2024-02-21T16:51:05Z")

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Thanks to the swift response of the urwid developers, this issue is now fixed with the 2.6.4 release.