Okay, now I can report back - same problem.
Btw, here's the contents of the file mentioned in the error:
<?xml version="1.0" encoding="UTF-8"?>
<metadata>
<groupId>com.android.support</groupId>
<artifactId>support-v4</artifactId>
<version>13.0.0</version>
<versioning>
<versions>
<version>13.0.0</version>
<version>18.0.0</version>
<version>19.0.0</version>
<version>19.0.1</version>
<version>19.1.0</version>
<version>20.0.0</version>
<version>21.0.0</version>
<version>21.0.2</version>
<version>21.0.3</version>
<version>22.0.0</version>
<version>22.1.0</version>
<version>22.2.0</version>
<version>22.2.1</version>
<version>23.0.0</version>
<version>23.0.1</version>
<version>23.1.0</version>
<version>23.1.1</version>
</versions>
<lastUpdated>20151111194029</lastUpdated>
</versioning>
</metadata>