*** Canceling drag because exception 'NSInternalInconsistencyException' (reason 'Can not nest column dragging sessions') was raised during a dragging session

UI Frameworks AppKit
Macho Man Randy Savage OP
Created Apr ’16
Replies 3
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I just got this when dragging in NSBrowser. Googled it, saw some others with the same issue. Is there a workaround?

Replies  3
Boosts  0
Views  575
Participants  2
Xav_78 OP
Feb ’17

Same issue for me.

I noticed that this occurs when dragging a second item just after dragging the first one. Seems that NSBrowser keeps an internal dragging ON state after the previous drop, and if a drag is performed during it, this exception occurs.

I did not found any solutions too.

0
Macho Man Randy Savage OP
Apr ’17

This seems to occur more and more frequently now. On 10.12.4 and Xcode 8.3.1.

0
Macho Man Randy Savage OP
Apr ’17

I filed a bug on this last year. It's still open. Attached bug number here for reference:


25739390

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*** Canceling drag because exception 'NSInternalInconsistencyException' (reason 'Can not nest column dragging sessions') was raised during a dragging session
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