control name "xxx" is misspelled or refer to a control that doesn't exist

Hi,
I am having 2 related weird problems with Access 2007.
1. Sometimes I get an error message "The control name "xxx" is misspelled or refer to a control that doesn't exist" when I use the embedded macro to build actions. However, I am 100% positive I am doing things right. Also, this error dissolves when I convert the macro to visual basic code. What happened here?

2. I am transferring the database to another computer when I finish creating my database and tested out without errors on my computer. The same error message above suddenly appears in the new computer. Why? It seems like I need to convert all those embedded macros to visual basic codes to avoid this problem but I don't understand how can the database work on one computer but suddenly not on another computer.

Thank you.