Error on Github deploy on windows azure

hej, since march we got some troubles with our deployments on our windows azure server. It seems that the deployments doesn't work and because sometimes it works sometimes not i don't get it.

Some kind of error i saw on my windows azure dashboard -> deployments:

"Response status code does not indicate success: 500 (Internal Server Error)."

or

"Host key verification failed. fatal: The remote end hung up unexpectedly"

i tried to restart the server or make new commits to github or simply redeploy or disconnect and reconnect to github. At the moment nothing works. There is a development server and a live server. Both contains the exact similiar version of the website (written in node.js). i've checked it a lot of times. Deployment with the development version works fine. live dont.

Do you have any suggestions? I have no idea where to start :-(

If it's a web role you can check the iisnode/ folder, should contain the log files. They can also be accessed with the emulator running, try

http://127.0.0.1:81/iisnode/