This one goes out to our Sage ACT! 2011 hosting customers. Sage recently released Sage ACT! 2011 SP1 Hot Fix 6. This release does contain schema changes, and if your remote database is not on the same version as your main database, you will not be able to synchronize. Simply put, since our Sage ACT! 2011 servers are now running HF 6, all remote users must install HF 6 to successfully synchronize.
To check your version, from within ACT!, click Help, then About ACT!.
The version should read 18.104.22.168, Hot Fix 6. Here is a Knowledge Base article to help you update to the correct version – http://bit.ly/zshwen. To simply download and then apply the Hot Fix use this link – http://bit.ly/xXlNBk.
Even if you are in a self-hosted environment, the mis-matched versions may apply and could be the root of a sync error. It’s also worth investigating the Hot Fix. There are several key bug fixes worth installing. Just remember, all databases, host and remotes, have to be on the same version for everyone to sync successfully in this case.