DM 4.2 issue sync to Yahoo

[Lexberry]

I had DM 4.2 and always have been able to sync my address book, calendar and tasks to Yahoo.I decided to upgrade to 4.5 found out I could not sync to Yahoo. I then went back to 4.2 and now cannot sync to Yahoo on this DM. Does anyone have any idea what is going on. I am totally lost without the sync so help is much appreciated. Thanks.

[akosnitzky]

Wirelessly posted (Verizon 8830)

http://www.blackberryfaq.com/index.php/Errors_syncing_the_BB_with_Desktop_Manager

[panhao6688]

i'm using the DM 4.6`````