Hi Nancy,
First of all, note that you're using an infinite timeout in WaitChild (-1). In this case, if TC is unable to find the target object, your test will not continue. You need to set a specific timeout (about 10 seconds should do).
Second, WaitChild is useless in most cases. You need to use other Wait methods. Look at your object in the Object Browser and check how it is recognized. Then, use the appropriate method (WaitWindow for 'Window', WaitPanel for 'Panel', WaitWinFormsObject for 'WinFormsObject', etc.). If "ugManu" is a part of the name from Name Mapping, use WaitNamedChild or WaitAliasChild depending on whether you address your objects via NameMapping or via Aliases (check its MappedName property to find this out).