Hi SevenNine,
Try remove AS & install again. Then soft reset, & sync.
If still problem, perform the following sequence and test synchronization between each step:
a. Run scanpst to check the PST for errors.
b. Open Outlook and click on Help - Detect & Repair to fix Outlook. This requires the Outlook CD.
c. Create a new folder in Outlook.
Move all the data of the type that is not synchronizing to the new folder.
Move it back until you find the item causing the error.
d. Create a new PST file:
File > New > Outlook Data File
Move your data into that PST.
Set that PST as the default PST in Outlook:
Tools > Email Accounts > Next
Select the new PST as the default email delivery location.
Close the old PST in Outlook.
If you still can't sync, check out the AS troubleshooting
site.
Post back if you need further assistance.