patch works right click apply fails msiapplypatch m

1. My application and patch were created with Installshield Developer 8.
2. The patch is an msp file (so it can be applied to administrative as well as regular installations).
3. On Vista, I can apply the patch successfully by right-click followed by APPLY
4. However, the following methods only apply it partially: a. Calling "msiexec -p <patch name>" from a batch file invoked "as administrator" b. Calling msi.dll method MsiApplyPatch from an application running in elevated privilege (used a manifest, Vista correctly prompts to aprove elevation of the app)
In either case (a) or (b), the system shows the application as having the post-patch version number, but in fact the appliation files were not updated!
I nned to use method (a) or (b) since I am using my custom installer for the patch, which detects the special case admin install and takes the user through the steps of updating the admin install.

Problem was caused by faulty patch. It is now resolved. Thank you!
"Trent" wrote:

1. My application and patch were created with Installshield Developer 8.
2. The patch is an msp file (so it can be applied to administrative as well as regular installations).
3. On Vista, I can apply the patch successfully by right-click followed by APPLY
4. However, the following methods only apply it partially: a. Calling "msiexec -p <patch name>" from a batch file invoked "as administrator" b. Calling msi.dll method MsiApplyPatch from an application running in elevated privilege (used a manifest, Vista correctly prompts to aprove elevation of the app)
In either case (a) or (b), the system shows the application as having the post-patch version number, but in fact the appliation files were not updated!
I nned to use method (a) or (b) since I am using my custom installer for the patch, which detects the special case admin install and takes the user through the steps of updating the admin install.