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Speed/Display issues/unfamiliar error messages, crashes/hangs or any other problems regarding Archicad (Example: I get an error message when the 3D Window is generated, please help!).
Note: If your problem seems to be an Archicad error please always report it to your local reseller!

Moderators: Karl Ottenstein, LaszloNagy, ejrolon, Barry Kelly, Gordana Radonic, nbalogh, mnguyen, gkmethy

By emailcopy
the "Undi", "Redo" function is always disabled in 5 minutes, how shall I solve this ?

屏幕截图 2021-03-25 145627.jpeg
屏幕截图 2021-03-25 145627.jpeg (228.27 KiB) Viewed 106 times
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By Barry Kelly
The 'Saving recovery file - ultra safe' has nothing to do with the undo/redo.
The 'Undo Limit' is what setts how many undos you can do.

However no matter what you set for that, there are certain command in Archicad that will delete or clear the undo queue.
I found this in the Reference Guide.

Warning: The undo queue is cleared entirely whenever you do the following operations:
– Delete or add a story, or change story height
– Update a Hotlinked module
– Send/Receive commands in Teamwork