Yesterday I installed the new Mac OS "High Sierra", but since I did that, a Java Programm of mine doesn't work anymore.
It looks like it works until the point you want to open a FileChooser and select a File.
The Exception below is shown in the Terminal.
objc[546]: Class FIFinderSyncExtensionHost is implemented in both /System/Library/PrivateFrameworks/FinderKit.framework/Versions/A/FinderKit (0x7fff9a225a70) and /System/Library/PrivateFrameworks/FileProvider.framework/OverrideBundles/FinderSyncCollaborationFileProviderOverride.bundle/Contents/MacOS/FinderSyncCollaborationFileProviderOverride (0x13c291cd8). One of the two will be used. Which one is undefined.
Thank you!