The first step in troubleshooting is to use the command in Outlook to clear
the cache using the Manage Forms dialog (Tools | Options | Other | Advanced
Options | Custom Forms, then click Manage Forms).
If that does not resolve the problem, shut down Outlook and delete the
entire contents of the FORMS folder. The location of the forms cache depends
on the operating system, where %username% is the environment variable
containing the user's login name:

â–*Windows Vista - C:\Users\%username%\AppData\Local\Microsoft\FORMS
â–*Windows XP - C:\Documents and Settings\%username\Local Settings\Application
Data\Microsoft\FORMS
The cache contains a Frmcache.dat file, which maintains a summary of cached
forms and pointers to the cached files, plus a subfolder for each cached
form.
--
Russ Valentine
"HJ" wrote in message
...
Thanks. I went to the link but the instructions are for Outlook 2003 and
I
can't find any similar files in Outlook 2007. Is there a different way to
access the forms cache in 2007?
--
HJ


"Brian Tillman [MVP-Outlook]" wrote:

"HJ" wrote in message
...

When I try to enter a new contact in Outlook 2007, I get the error
message:
"Could not complete the operation. One or more parameter values are
not
valid." I am able to revise and save existing contact information. I
am
working offline, if that makes a difference. Does anyone know how to
fix
this?

I'd try clearing the forms cache.
http://www.howto-outlook.com/downloa...formscache.htm
--
Brian Tillman [MVP-Outlook]

.