Merging threads (???)

If you are moving a whole topic then there is no problem.

If you are trying to move one post to another topic, if this is the only post left in that topic with the Access version you need to then manually delete the topic to prevent this error.

The reason for this is that there is code to look at the topic the post is moved from and delete the old topic if there are no posts left in it.

This works perfectly well in the SQL serer version, but on some server with the access version the access database is slow to update, so when the test is run on the database to see if there are posts left in the topic it returns that there is.

There is no work around for this just a problem with access sometimes being very slow at updating on some servers. You will just have to manually delete those topics.

Sounds like your access database has become corrupted, this is quite common with access as it is a desktop database package not really designed for a web application backend.

If you are using version 7.5 or above of the forum there is a compact and repair feature in the admin area that may help sortout the problem.

If you can running the SQL server version would be much better as it is a far superior database management system.