Timeout when showing NSSavePanel

Question

When showing an NSSavePanel while the app is in background I get the following error:

RVS:__54-[NSRemoteSavePanel _runOrderingOperationWithContext:]_block_invoke_0319 : Timeout occured while waiting for the window
Remote Window Controller requested NSRequestRetryActivateSharedwindow...

Also, the panel doesn't appear and runModal returns NSFileHandlingPanelCancelButton.

The app is sandboxed. This is the code that creates the panel:

NSSavePanel *panel = [NSSavePanel savePanel];
NSInteger result = [panel runModal];
if (result == NSFileHandlingPanelOKButton)
{
    // Do something
}

What might be the problem?

If the app is in the foreground the panel is shown without any error.

Prewitt

damn ^^ this is hard... mhm not in a block... in main thread? I guess so... WHEN do you call this? – Spokane

Main thread. I already checked in the debugger, just in case. – Prewitt

yip and WHEN? before appWilllFinishLaunching - from inside awakeFromNib? – Spokane

Gets called in a delegate method of the app delegate, after a long-running background operation finishes. The method is called in the main thread. – Prewitt

and do you somehow block the main thread after the call somehow -- so that the window cannot be shown? some sleep ^^ or for(i<1000000000) or some calculation? – Spokane

Nope. I only call stopAnimation on a progress indicator before, but I removed that to test and it still fails. – Prewitt

and after the call to runModal? – Spokane

There's nothing after the beginWithCompletionHandler: call. – Prewitt

Clarified that the app is sandboxed. Also simplified the example, as the problem can be also reproduced with runModal. – Prewitt

are you running something else modal? or does the runloop not run by any chance? – Spokane

Nope. The only "odd" thing is that it only happens when the app is not in the foreground. – Prewitt

Answer 1

Be sure to enable the appropriate entitlements. In this case, check that "User Selected File" is not set to "No Access".

Clay

It's set to Read/Write access. – Prewitt

Answer 2

For the "User selected file" entitlement of the Entitlement section from Summary tab of target setting should be set to "Read/Write" access.

Brinkmanship

The questioner already said that it is set to read/write. #14060714 – Darken

Sorry Peter Hosey, I did not observe. Even i had faced same issue, By setting "Read/Write" access its been resolved – Brinkmanship