Problems getting custom object into a custom collection [Resolved]

[Porsche944]

I have a class called objLocate which stores information about various searches my program performs. I also have a custom class that works like a collection. Both of the classes work correctly because I have gotten my save previous searches to work correctly. I am trying to create a list box now loaded with some standard features that will be linked to the custom collection class I created by referecing the object through the item property.

I am getting the error
Additional information: Object reference not set to an instance of an object
on the line
Dim tempObject As objLocate = New objLocate(SearchFor.RegularExpression, desMachineType.HomeWorkstation, "MA-EA.*", enumSaveName.DellTag, enumSearchTab.Basic, enumUpdateHashTable.No)

I have tried as new objLocate as well and I even tried the like that is commented out which is a function i created to create these objects from the class. I keep getting the same error.

lstDivisions.Items.Add("MA-EA")
        Dim tempObject As objLocate = New objLocate(SearchFor.RegularExpression, desMachineType.HomeWorkstation, "MA-EA.*", enumSaveName.DellTag, enumSearchTab.Basic, enumUpdateHashTable.No)
        'Dim tempObject As objLocate = LoadLookingForObject(enumSearchTab.Basic, enumPresetSearch.GX110)
        preDivision.Add(tempObject)
        tempObject = Nothing
        lstDivisions.Items.Add("MA-FI")
        Dim tempObject1 As New objLocate(SearchFor.RegularExpression, desMachineType.HomeWorkstation, "MA-FI.*", enumSaveName.DellTag, enumSearchTab.Basic, enumUpdateHashTable.No)
        preDivision.Add(tempObject1)

[Zakary]

Do all parameter are enumeration ? or are they all instanciated ?

SearchFor.RegularExpression
desMachineType.HomeWorkstation
enumSaveName.DellTag
enumSearchTab.Basic enumUpdateHashTable.No

or probably the error is in the New Event of objLocate?

[Porsche944]

They are enumerations, I've never had problems creating objLocate objects from this class before.

The error actually happens on this line

preDivision.Add(tempObject)

[Zakary]

and what is the definition of preDivision?

Do it is Instantiated earlier ?

[Porsche944]

Thanks for that response I found the problem was in the way I declared preDivision I forgot to ad as new on it. It's working now thats for your help.

I am adding props to your replies.

[Porsche944]

"You must spread some Reputation around before giving it to Zakary again."

Looks like I already gave you props for helping me out on something else. I'll get you back in the future

[Zakary]

Happy to help body !!