The "Peers" and "Tracker" tabs are in the dialog named "Inspector" on the Mac GUI and "Torrent Properties" on the GTK+ GUI.
### Crash on the Mac ###
If you have problems on the Mac version then please do these extra steps:
* Make sure your system is updated to the latest version of your operating sytem. Note As of 1.60 Transmission requires Mac OS X 10.5 or later.
* If you're running a nightly build, set the language to English. The localizations will sometimes crash the nightly builds until they are updated right before an official release.
* OS X collects two pieces of crash information that can help us fix the crash:
1. In Console.app, look under LOG FILES > ~/Library/Logs/ > CrashReporter > for Transmission. If you find one, include it in your forum post.
2. In Console.app, select LOG DATABASE QUERIES > Console Messages, and search for Transmission. If you find a message that mentions an assertion failure, include it in your forum post.
If these two pieces of information above are too large for your forum post, Paste them [here](http://transmission.pastebin.com/), click the "one month" and "send" buttons, and include the pastebin's URL in your forum post.
### Port Mapping Error ###
Read the [[Port Forwarding Guide|PortForwardingGuide]] first.
You then need to include:
* what router you're using
* that you've confirmed that either UPnP or NAT-PMP is enabled on it
* If you're using a custom firmware, tell us which one
* Most importantly, post the lines from the Message Log that contain the phrase "Port Mapping". They will look something like this:
02:12:27 Port Mapping (NAT-PMP): initnatpmp returned success (0)
02:12:27 Port Mapping (NAT-PMP): sendpublicaddressrequest returned success (2)
02:12:27 Port Mapping: mapping state changed from 'not mapped' to 'mapping'
02:12:27 Port Mapping: opened port 55555 to listen for incoming peer connections
02:12:35 Port Mapping (NAT-PMP): readnatpmpresponseorretry returned error -7, errno is 111 (Connection refused)
02:12:35 Port Mapping (NAT-PMP): If your router supports NAT-PMP, please make sure NAT-PMP is enabled!
02:12:35 Port Mapping (NAT-PMP): NAT-PMP port forwarding unsuccessful, trying UPnP next
02:12:37 Port Mapping (UPNP): Found Internet Gateway Device 'http://192.168.1.1:5431/uuid:0012-17c3-4e400200b4b4/WANIPConnection:1'
02:12:37 Port Mapping (UPNP): Local LAN IP Address is '192.168.1.99'
02:12:37 Port Mapping (UPNP): Port forwarding via 'http://192.168.1.1:5431/uuid:0012-17c3-4e400200b4b4/WANIPConnection:1', service 'urn:schemas-upnp-org:service:WANIPConnection:1'. (local address: 192.168.1.99:55555)
02:12:37 Port Mapping (UPNP): Port forwarding successful!
02:12:37 Port Mapping: mapping state changed from 'mapping' to 'mapped'