Well you need to work out why it's failing first!
And without any detail it's very difficult for anyone to help you as we're not mind readers!
Does the object even exist in your object map?
Have you changed the name of the object map?
Do you have dynamic class names (a common problem with infragistics controls)?
You've really given no information about the AUT or anything to really help you.
If it's your class name you need to edit the object map and untick the offending class! Why don't you post a screenshot of whatthe step that is failing with the properties in view, then post a screenshot of the object map properties that it's looking for.
TestPartner 6.3, Visual Tests
Application under test: Client/Server based, C# .Net App with Infragistics Presentation layer
Database: SQL 2000/2005
Are you using a visual test or a test script? If you're using a test script, you can easily solve the problem by adding the tpAttachWait or tpAttachNoWait parameters to your Attach and Exists statements. This will utilize the Playback Attach Timeout settings you've assigned.
I don't use visual tests, so unfortunately, I can't offer any assistance on those.
AUT: Web app - Java/SQL
Using TestPartner since 2008
Using QTP since 2002