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lapucca

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Error of not able to find the dll that is in the installed directory.

Hi, I'm using vs2005, .net 2, C# for windows application.  In my application, I use a C-compiled dll for some of it's functions.  It works on my devvelopment PC if I have this dll in my application-drive\bin\release folder.  I created a Setup project for the application.  In the file syste, I added the dll.  After successful installation on a target machine, I get error of not able to find the dll.  I checked the program files directory and the dll is there.  Can someone tell me what's wrong here and how can I solve this?  Thank you.
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steveberzins

a plain old C dll, or is it a COM dll?

if it is a COM dll, this may apply...
http://msdn.microsoft.com/msdnmag/issues/05/04/RegFreeCOM/

look for the section:
Isolating COM Components

and make sure to read the limitations of reg free com sidebar, to assure that any limitations do not apply to your specific scenario.
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ASKER

Thank you but it's a plain old C dll.  
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ASKER

I'm sorry but the question is not clear abou the type of dll.  The dll is just plain C code.  I compiled it in VS2005's C++ compiler to produce a dll.  
All I can think of is to check whether you are using either relative or absolute paths (whichever is appropriate, double check) and whether the program has permissions to access the folder.
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steveberzins

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ASKER

Hi Steve,
No, there isn't a interop created with the file name.  Here is how that dll is imported to my applicatinon by the following declareation.   Thanks.

            [DllImport("UnityDecodeAsnUser.dll", CharSet = CharSet.Unicode)]
            public static extern DE_ERRORS DecodeAsnGroup(ref Blob blob,
                 [In, Out]CGroupContextData m);
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ASKER

Oh, Also, I'm not able to add this dll to my project as reference.
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ASKER

I found the problem is the C-code dll has a dependency on MSVCR80.dll.  Once I copied that to the target PC it ran OK.  Thank you.
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Thanks.