Originally Posted by nickganga
Davinci, did Ash's suggestions work? I am having a very similar problem, but my CDO is 6.5.6980.3 MAPI 6.5.6944.0
sO, What worked is this: What I did first was rename the cdo.dll file on the BES to something else and I found the cdo.dll file on the Exchange Server in the Exchsrv\bin directory and I copied it over to my Windows\System32 folder on my BES. Then I registered the cdo file on my BES by running the regsvr32 cdo.dll command. It successfully registered the dll file. Then I reopened up the Blackberry Manager, tested the calendar and it worked. Another thing to check would be the permissions given to your BES service account.
One of my employees found it on the forms (some how I missed it). Good luck.