# G4P can't handle multiple opened sketches on my mac
**URL:** https://discourse.processing.org/t/g4p-cant-handle-multiple-opened-sketches-on-my-mac/29485
**Category:** Libraries
**Created:** [April 19, 2021, 5:22am UTC](https://discourse.processing.org/t/g4p-cant-handle-multiple-opened-sketches-on-my-mac/29485 "2021-04-19T05:22:23Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@FedeKrum](https://discourse.processing.org/u/FedeKrum)
#### Post date: [April 19, 2021, 5:22am UTC](https://discourse.processing.org/t/g4p-cant-handle-multiple-opened-sketches-on-my-mac/29485/1 "2021-04-19T05:22:23Z")
Hi.
If I open 2 sketches in Processing on my mac, “G4P GUI builder” gets confused and if I open it while focused on one project, it may bring the “gui” of the other.
This forces me to close all other sketches and try again to get the correct “gui”.
Am I alone on this or did it happened to anyone else?
Is it a Mac-specific issue?
Thanks
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### Author:  [@quark](https://discourse.processing.org/u/quark)
#### Post date: [April 19, 2021, 11:04am UTC](https://discourse.processing.org/t/g4p-cant-handle-multiple-opened-sketches-on-my-mac/29485/2 "2021-04-19T11:04:21Z")
You cannot use GUI Builder to design GUIs for 2 or more sketches at the same time, it is just a limitation of GUI Builder.
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### Author:  [@FedeKrum](https://discourse.processing.org/u/FedeKrum)
#### Post date: [April 19, 2021, 11:23am UTC](https://discourse.processing.org/t/g4p-cant-handle-multiple-opened-sketches-on-my-mac/29485/3 "2021-04-19T11:23:50Z")
Understood !!
Thanks