Yes I read those articles but I found the correct answer elsewhere.
In one of the discussions, someone suggested that after downloading the latest version of Xcode, we better re-download de latest version of iTunes as well.
I effectively downloaded Xcode a few days ago.
So I downloaded iTunes again as stated in the discussion.
And indeed, it works now fine !
So thank you all for your kind assistance.
It a pleasure being part of this community.
Apple is the most consumer unfriendly company ever. I have an iphone 4 running OS 4.1. Backup worked fine till upgrading itunes from 10 to 10.5.
Other products (from 4.2 onwards) worked fine. Tried downgrading but got this ******** " cannot start library becsause created by never version" or something BS.
Thankfully my library is on a NAS and I had a computer still running itunes 10. AMAZING IT WORKED!! (sarcasm). So I had to copy the backup into the itunes 10.5 folder and it shows up.
This is an obvious compatibility issue by design, and now I must try to find a way to downgrade. (any help will be greatly appreciated).
If I wasn't grandfathered into the unlimited data plan, I would switch to droid. People criticize MS but apple is far, far more closed minded. Why people marvel at a proprietary version of Linux is beyond me.
Thankfully there are lots of posts on how to fix the library issue. At least apple had the sense to backup the old library. That still is no excuse for intentionally engineering incompatibilities.
If anyone has this issue, you just need to rename the library to the .old extension, then copy the last backup found in "previous libraries" and change the name to match the original file name.
Why is this necessary? Why can't people simply re-install an older version?