PureBasic 6.30 does not start on macOS Tahoe – NSToolbar exception
Posted: Sat Feb 28, 2026 8:41 am
Dear PureBasic Team,
I would like to report an issue where PureBasic 6.30 does not start properly on my macOS Tahoe system.
When launching the application, only the PureBasic splash screen appears. The IDE window never opens and the application becomes unresponsive. It does not quit automatically; it must be terminated manually using Force Quit.
According to the system log, the issue appears to be related to an NSInternalInconsistencyException during NSToolbar initialization. The relevant error message is:
“NSToolbar already contains an item with the identifier 0. Duplicate items of this type are not allowed.”
It seems that the IDE attempts to insert a duplicate toolbar item identifier, which macOS Tahoe’s AppKit implementation no longer allows.
Removing the Saved Application State and preference files did not resolve the issue.
System information:
PureBasic version: 6.30 ARM64
macOS version: Tahoe 26.3
Hardware: Apple Silicon Mac Mini M1 16G RAM
I can provide the full system log if required.
I would be grateful for your assistance in resolving this problem.
Kind regards,
Zoltan Kiss
I would like to report an issue where PureBasic 6.30 does not start properly on my macOS Tahoe system.
When launching the application, only the PureBasic splash screen appears. The IDE window never opens and the application becomes unresponsive. It does not quit automatically; it must be terminated manually using Force Quit.
According to the system log, the issue appears to be related to an NSInternalInconsistencyException during NSToolbar initialization. The relevant error message is:
“NSToolbar already contains an item with the identifier 0. Duplicate items of this type are not allowed.”
It seems that the IDE attempts to insert a duplicate toolbar item identifier, which macOS Tahoe’s AppKit implementation no longer allows.
Removing the Saved Application State and preference files did not resolve the issue.
System information:
PureBasic version: 6.30 ARM64
macOS version: Tahoe 26.3
Hardware: Apple Silicon Mac Mini M1 16G RAM
I can provide the full system log if required.
I would be grateful for your assistance in resolving this problem.
Kind regards,
Zoltan Kiss