Problem in using Blackberry Desktop Software

Hello Everyone,
I am having a problem in using Blackberry Desktop Software, an error pops up as it syncs with the calendar Error Encountered. Error Code 0x80043ac9. Check documentation. ” I am using 9800 torch and I connect it with wire/cable sync and using latest version of Blackberry software.
I tried to find out the said documentation in error but haven’t got any. I have removed all my contacts, restore backup, delete them from device and restored. The same procedure I did with Calendar but still it doesn’t work. Due to this I stop calendar from syncing and it works good but is no longer syncing. Can someone help me fixing this error? Your help would be highly appreciated.
Thank you in Advance.
