Q: iTunes Producer 3.0 is locking up

An indicator of bugz in a new version..is lots of complaints..so far there are very few.

I uploaded a book today and used it for the first time. Its easier than the previous versions...and I had no problems.

I read on other forums of bugz or glitches with the new MB pro, perhaps a visit to your local Apple store will help.

I have the same problem... did you solve it?

Issue remains unsolved.  Contacted Apple support.  They have heard about the issue.  Asked me to add a new user to the Mac, then install fresh.  This did not solve the issue or provide a temp workaround.  I have a MB Air taht did not have the IT Prducer on it, installed the new version, same problem occurs. 

Why not walk your machine into your nearest Apple store and ask them to investigate the problem. It seems to be a faster option than contacting support a few times.

I also can no longer upload books to the iBooks store because 3.0 keeps crashing on my computer runnig 10.9.2.

I succeeded in restoring iTunes Producer 2.9 from my Time Machine back up,  and it works flawlessly!