Android App development error: Your project contains error (s), please fix them before running Your

Re-open Eclipse run Android project, or some time to run Eclipse, open, find new project all have Red Fork, the previous project recompile also has this problem, Internet search to solve the problem by doing the following

Works have Red fork, do not know what is missing, but there is no error in the project, run the program to error: Your project contains error (s), please fix them before running Your application.

Tried the clean, tried the delete project, and then re-imported it, but it didn't work.

Find a workaround:

The first: linux:window--"preferences--" android--"build in default debug KeyStore shows the address"/home/jinli/.android/debug.keystore ", remove Debug.keystore and ddms.cfg under this path

Window XP: Enter: C:\Documents and Settings\administrator\.android (Win7 in C:\Users\ly\.android)
Delete: Debug.keystore and Ddms.cfg

Second type: Restart Eclipse

The second is more convenient, you can first use the second method, if the second method does not use the first method.

Android App development error: Your project contains error (s), please fix them before running Your