Unable to backup sharepoint

Hi everybody!

I'm having troubles while backing up Sharepoint 2010 over Windows Server 2008 R2.

The job ends with status 2 and don't backup anything.

This is the end of the detailed status of the job. Image may be NSFW.
Clik here to view.

Also I attach the bpresolver log, where I believe the problem is.

I really can't see where is the problem, I followed all the steps from the Sharepoing GRT guide (HOWTO73100) but the error still..

Hope somebody can help me with this.

Thansk a lot in advance.