In 4.4.54 I performed the following steps on a Samsung Nexus with 4.1.
1. Run application
2. Killed application through the running applications.
3. Cleaned data through settings/Apps
4. Tried to run the application again.
and got an infinite number of the following before I killed the application again.
01-15 11:15:46.864 W/ (13184): Bad call to mono_mutex_lock result 11
01-15 11:15:46.864 F/ (13184): * Assertion at /Users/builder/data/lanes/monodroid-mac-monodroid-4.4-series/c6e52015/source/mono/mono/metadata/loader.c:2181, condition `ret == 0' not met
and the application would not start.
Yes, I'm having exactly the same issue. I'm running a Galaxy Nexus with Android 4.2.1.
As temporary workaround you can disable "Use Fast Deploy" in the project settings to make the deployment work again properly.
I'm seeing this as well with a Galaxy S3.
This still happens with MfA 4.6.
Fixed in monodroid/47387e9e.