When I copy from a RichText box control and paste to another RichText box control, I get the above message and noting happens.

When I copy from a PlainText box control and paste to a RichText box control the paste action works fine.

When I copy from a RichText box control and paste to a PlainText box control the paste action works fine.

The copy action works fine, because I can the copied text in the office clipboard.

This is the interesting part:

When I click on the copied item in the Office Clipboard, I get an error message:

The command or action 'Paste' isn't available now.

* You may be in a read-only database or an unconverted database from an earlier version of Contract Register. (which is my database's name)

* The type of object the action applies to isn't currently selected or isn't in the active view.

Use only the commands and macro actions that are currently available for this database.

Then when I try to paste to the RichText box control it works fine, but still not formatted.