We are rolling out Office 2013 and had to learn that Reportbuilder is not compatible yet.
Luckily some still have 2010 so they can update reports, but
Please make Report Builder Excel 2013 compatible ASAP
I've used the existing build of Report Builder with excel 2013 and have not had any trouble with it as of yet.
What kind of problems have you been seeing?
I had been told that it does not work by clientcare.
Just tried and it works - guess its resolved 🙂