Can't run MonoTouch App

Question

Hi guys,

This is not a really Programming Question, but please bear with me as it's related to the IDE that we use to develop and I'm really Stuck! :(

Every time I create a project (can be an empty project) I get the message above when pressing Run or Debug.

I have no Web Servers running the Web Share is off, the Zend Server as well MAMP is Off, the app itself does nothing as it's a blank project and if I run it on the iPhone/iPad Simulator, the app just opens and closes automatically :-/

I'm all new to monoTouch, but I wonder, does anyone has this problem and know what should I do?

• Running OSX 10.6.3
• iPhone SDK 3.2
• MonoDevelop 2.2.2
• MonoTouch Eval 2.0.1

Thank you for all the help.

---

Answer back to Steven's question

mac-bruno:~ balexandre$ lsof -i | grep LISTEN
AppleVNCS  536 balexandre    8u  IPv6 0x075cd460      0t0  TCP *:vnc-server (LISTEN)
Dropbox    577 balexandre   18u  IPv4 0x09f86b1c      0t0  TCP *:17500 (LISTEN)
Dropbox    577 balexandre   20u  IPv4 0x09f846b0      0t0  TCP practivate.adobe.com:26164 (LISTEN)
synergys   592 balexandre    5u  IPv4 0x075ce274      0t0  TCP *:24800 (LISTEN)
JavaAppli  815 balexandre   33u  IPv6 0x0f8b3bb0      0t0  TCP [::127.0.0.1]:6880 (LISTEN)
JavaAppli  815 balexandre   45u  IPv6 0x075cc350      0t0  TCP *:39582 (LISTEN)
JavaAppli  815 balexandre   48u  IPv6 0x0f8b3460      0t0  TCP *:41688 (LISTEN)
JavaAppli  815 balexandre   51u  IPv6 0x0f8b3940      0t0  TCP [::127.0.0.1]:45100 (LISTEN)
JavaAppli  815 balexandre  108u  IPv6 0x0f911d10      0t0  TCP *:58573 (LISTEN)
mac-bruno:~ balexandre$ 

Answer 1

Something is obviously listening on the port, I think it uses 10000 by default, although my Mac isn't on to check. If you fire up a terminal and run:

lsof -i | grep LISTEN

It should show you all processes that are listening for connections, hopefully that will point you in the right direction as to what's causing the conflict.

Edit: From the MonoTouch Troubleshooting page

Debugger is unable to connect with the device

When you start debugging a device configuration, you will see the debugger show a dialog indicating that it is listening on a particular IP address. This IP address is also built into the application as a default setting. When you start the application in debug mode, it makes a connection to MonoDevelop, the debugger host. If it is unable to connect, the device will vibrate once.

There are several reasons the application may not be able to connect to the debugger:

If the device and the debugger host are on different networks, a firewall or private network may be preventing the application from connecting to the debugger host.

MonoDevelop may picked the wrong host IP address. MonoDevelop picks the first IP address on the machine, which, if you have multiple network interfaces, may not be the one you want. You can override the IP that MonoDevelop uses by quitting MonoDevelop and editing its settings file. This is in a hidden directory in in your home directory, ~/.config/MonoDevelop/MonoDevelopProperties.xml.

Look for the key "MonoTouch.Debugger.HostIP", and edit the value. If it is not present you will need to add it:

view plainprint? where w.x.y.z is the IP you wish to use.

The debugger host's IP address may have changed. MonoDevelop has to embed the host's IP address in the application's default settings so that it knows what address to connect to. If the host's IP changes after you build the app, you need to rebuild and re-upload the app, or change the IP address entry in the app's settings on the device.