Something is wrong with the database.
Assuming that you don't have 2 copies of the database open, and no one else
has it open, try switching to design view, and then saving the changes.
If that fails, here's a standard set of steps for recovering the database:
Try this sequence (in order):
1. Uncheck the boxes under:
Office Button | Access Options | Current Database | Name AutoCorrect
Explanation of why:
http://allenbrowne.com/bug-03.html
2. Compact the database to get rid of this junk:
Office Button | Manage | Compact/Repair
3. Close Access. Make a backup copy of the file. Decompile the database by
entering something like this at the command prompt while Access is not
running. It is all one line, and include the quotes:
"c:\Program Files\Microsoft office\office\msaccess.exe" /decompile
"c:\MyPath\MyDatabase.mdb"
4. Open Access (holding down the Shift key if you have any startup code),
and compact again.
5. Open a code window.
Choose References from the Tools menu.
Uncheck any references you do not need.
For a list of the ones you typically need in your version of Access, see:
http://allenbrowne.com/ser-38.html
6. Still in the code window, choose Compile from the Debug menu.
Fix any errors, and repeat until it compiles okay.
At this point, you should have a database where the name-autocorrect errors
are gone, the indexes are repaired, inconsistencies between the text- and
compiled-versions of the code are fixed, reference ambiguities are resolved,
and the code syntax is compilable.
If it is still a problem, the next step would be to get Access to rebuild
the database for you. Follow the steps for the first symptom in this
article:
Recovering from Corruption
at:
http://allenbrowne.com/ser-47.html