Q:

Error on button click of Android App

I have developed an app on Eclipse, but when I click on the buttons of the app, an error message is shown. 
The error message is:
Unfortunately , database has stopped. 

database is the name of my application. 
11-01 10:29:51.620: E/memtrack(4150): Couldn't load memtrack module (No such file or directory)
 11-01 10:29:51.620: E/android.os. Debug(4150): failed to load memtrack module: -2
11-01 10:29:51.690: D/AndroidRuntime(4150): Calling main entry com.android.commands.pm. Pm
11-01 10:29:51.690: D/AndroidRuntime(4150): Shutting down VM
11-01 10:29:51.690: D/dalvikvm(4150): Debugger has detached; object registry had 1 entries
11-01 10:29:51.690: I/AndroidRuntime(4150): NOTE: attach of thread 'Binder_1' failed
11-01 10:29:51.700: E/cutils-trace(4150): Error opening trace file: No such file or directory (2)

A:

If there is a newer version  of the same Application in the target emulator, you will get  
**Couldn't load memtrack module (No such file or directory)
failed to load memtrack module: -2**

.Try to uninstall the  previous version and try again.