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Script using custom DLL not working

I have a custom DLL and imported in the script component to use it. Withing the script designer, I can see the method accessing (from Intellisense). But when I run the package, it says that it does not find the method (if try to access the static method) or not able to load "type" I am instantiating it within the script.  
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1 Solution
You could try late binding
Set oObject = CreateObject("YourDLLProgID")
Call oObject.YourMethod
To enable late binding you need to untick a setting in the editor though
templeavenueAuthor Commented:
Thanks for the reply. But it doesn't work. It will give me exception when I run the package. I need to add more info so that it can be resolved easier.
First, I am modifying existing DLL. In the same DLL, the classes existed before seems to be accessed and accessing the new class is giving me exception. The DLL is being done by different person in the past.
Second, Can you add reference fromt he Script Editor without putting the DLL in the .NET framework folder? I now have to put the DLL in the .NET framework folder as before in order to reference.
Also,  I tested the DLL by testing a small program to the the new class in the DLL.
I hope this would help us.

thanks again!
templeavenueAuthor Commented:
I figured it out. In the design time, it used the DLL in the .NET framework folder. But run time, it used the DLL registered by GAC(Global Assembly Cache). The DLL must be registered by using gacutil and must be the same .NET version used to created the DLL.
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