Preferences window crush

[antonkuzmin]

Line 18: self.tfAdbPath.stringValue = [[NSUserDefaults standardUserDefaults] objectForKey:PREFS_ADB_PATH];

if [[NSUserDefaults standardUserDefaults] objectForKey:PREFS_ADB_PATH] returns nil, application crushes.

My workaround:
if([[NSUserDefaults standardUserDefaults] objectForKey:PREFS_ADB_PATH] != nil) {
self.tfAdbPath.stringValue = [[NSUserDefaults standardUserDefaults] objectForKey:PREFS_ADB_PATH];
}

[aramazhari]

The preference windows disappear after switching between tabs. I tried this on Mavericks and Yosemite and both have the same problem.