Selection tool error

[HyojeongLee]

When I used the selection tool & direct selection tool, it suddenly crashed the whole screen.

How can I fix this?

I attached the screen record.

[Jacob Bugge]

HyojeongLee,

For best possible help with all questions, you can also use the Korean forum/forums:

https://community.adobe.com/t5/ko/ct-p/ko

[Mohammad.Harb]

this could a GPU issue, update your graphic card then reset illustrator preferences